113121212200 has 24 divisors (see below), whose sum is σ = 263006818830. Its totient is φ = 45248484800.

The previous prime is 113121212189. The next prime is 113121212219. The reversal of 113121212200 is 2212121311.

It can be written as a sum of positive squares in 3 ways, for example, as 71568020484 + 41553191716 = 267522^2 + 203846^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282802831 + ... + 282803230.

Almost surely, 2^113121212200 is an apocalyptic number.

113121212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113121212200 is an abundant number, since it is smaller than the sum of its proper divisors (149885606630).

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

113121212200 is a wasteful number, since it uses less digits than its factorization.

113121212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565606077 (or 565606068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 113121212200 its reverse (2212121311), we get a palindrome (115333333511).

The spelling of 113121212200 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred twelve thousand, two hundred".