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11233211220 = 2234571190053
BaseRepresentation
bin10100111011000110…
…10011001101010100
31001222212021020220000
422131203103031110
5141001200224340
65054354411300
7545240501640
oct123543231524
931885236800
1011233211220
114844944940
122215b90b30
1310a033c45a
14787c59c20
1545b2a8d30
hex29d8d3354

11233211220 has 240 divisors, whose sum is σ = 43934825088. Its totient is φ = 2334147840.

The previous prime is 11233211207. The next prime is 11233211221. The reversal of 11233211220 is 2211233211.

11233211220 is a `hidden beast` number, since 1 + 1 + 233 + 211 + 220 = 666.

11233211220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11233211193 and 11233211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 79714 + ... + 169766.

Almost surely, 211233211220 is an apocalyptic number.

11233211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11233211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21967412544).

11233211220 is an abundant number, since it is smaller than the sum of its proper divisors (32701613868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11233211220 is a wasteful number, since it uses less digits than its factorization.

11233211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90092 (or 90081 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11233211220 its reverse (2211233211), we get a palindrome (13444444431).

The spelling of 11233211220 in words is "eleven billion, two hundred thirty-three million, two hundred eleven thousand, two hundred twenty".