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11212132230 = 232513172324509
BaseRepresentation
bin10100111000100101…
…11000111110000110
31001221101121022221200
422130102320332012
5140430301212410
65052322523330
7544563360105
oct123422707606
931841538850
1011212132230
114833a57992
12220ab06546
131098b6bb90
1478513003c
154594e33c0
hex29c4b8f86

11212132230 has 192 divisors, whose sum is σ = 34687336320. Its totient is φ = 2484523008.

The previous prime is 11212132177. The next prime is 11212132271. The reversal of 11212132230 is 3223121211.

11212132230 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 congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 445216 + ... + 469724.

It is an arithmetic number, because the mean of its divisors is an integer number (180663210).

Almost surely, 211212132230 is an apocalyptic number.

11212132230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11212132230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17343668160).

11212132230 is an abundant number, since it is smaller than the sum of its proper divisors (23475204090).

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

11212132230 is a wasteful number, since it uses less digits than its factorization.

11212132230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24575 (or 24572 counting only the distinct ones).

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

Adding to 11212132230 its reverse (3223121211), we get a palindrome (14435253441).

The spelling of 11212132230 in words is "eleven billion, two hundred twelve million, one hundred thirty-two thousand, two hundred thirty".