11332211220 has 144 divisors (see below), whose sum is σ = 39705277248. Its totient is φ = 2585594880.

The previous prime is 11332211213. The next prime is 11332211221. The reversal of 11332211220 is 2211223311.

11332211220 is a `hidden beast` number, since 113 + 322 + 11 + 220 = 666.

It is a super-2 number, since 2×11332211220² (a number of 21 digits) contains 22 as substring.

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 = 11332211193 and 11332211202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11332211221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134674 + ... + 201993.

It is an arithmetic number, because the mean of its divisors is an integer number (275731092).

Almost surely, 2^11332211220 is an apocalyptic number.

11332211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11332211220 is an abundant number, since it is smaller than the sum of its proper divisors (28373066028).

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

11332211220 is a wasteful number, since it uses less digits than its factorization.

11332211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336710 (or 336705 counting only the distinct ones).

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

Adding to 11332211220 its reverse (2211223311), we get a palindrome (13543434531).

The spelling of 11332211220 in words is "eleven billion, three hundred thirty-two million, two hundred eleven thousand, two hundred twenty".