113512511212 has 48 divisors (see below), whose sum is σ = 204716574720. Its totient is φ = 55052749952.

The previous prime is 113512511183. The next prime is 113512511251. The reversal of 113512511212 is 212115215311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5388933 + ... + 5409955.

It is an arithmetic number, because the mean of its divisors is an integer number (4264928640).

Almost surely, 2^113512511212 is an apocalyptic number.

It is an amenable number.

113512511212 is a deficient number, since it is larger than the sum of its proper divisors (91204063508).

113512511212 is a wasteful number, since it uses less digits than its factorization.

113512511212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21390 (or 21388 counting only the distinct ones).

The product of its digits is 600, while the sum is 25.

Adding to 113512511212 its reverse (212115215311), we get a palindrome (325627726523).

The spelling of 113512511212 in words is "one hundred thirteen billion, five hundred twelve million, five hundred eleven thousand, two hundred twelve".