111112012100 has 18 divisors (see below), whose sum is σ = 241113066474. Its totient is φ = 44444804800.

The previous prime is 111112012007. The next prime is 111112012139. The reversal of 111112012100 is 1210211111.

It can be written as a sum of positive squares in 3 ways, for example, as 5829933316 + 105282078784 = 76354^2 + 324472^2 .

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, 555559961 + ... + 555560160.

Almost surely, 2^111112012100 is an apocalyptic number.

111112012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112012100 is an abundant number, since it is smaller than the sum of its proper divisors (130001054374).

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

111112012100 is a wasteful number, since it uses less digits than its factorization.

111112012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111120135 (or 1111120128 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111112012100 its reverse (1210211111), we get a palindrome (112322223211).

The spelling of 111112012100 in words is "one hundred eleven billion, one hundred twelve million, twelve thousand, one hundred".