113233021212 has 12 divisors (see below), whose sum is σ = 264210382856. Its totient is φ = 37744340400.

The previous prime is 113233021189. The next prime is 113233021217. The reversal of 113233021212 is 212120332311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113233021217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4718042539 + ... + 4718042562.

Almost surely, 2^113233021212 is an apocalyptic number.

113233021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

113233021212 is an abundant number, since it is smaller than the sum of its proper divisors (150977361644).

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

113233021212 is a wasteful number, since it uses less digits than its factorization.

113233021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436085108 (or 9436085106 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 113233021212 its reverse (212120332311), we get a palindrome (325353353523).

The spelling of 113233021212 in words is "one hundred thirteen billion, two hundred thirty-three million, twenty-one thousand, two hundred twelve".