111211010120 has 32 divisors (see below), whose sum is σ = 285971169600. Its totient is φ = 38129489088.

The previous prime is 111211010089. The next prime is 111211010143. The reversal of 111211010120 is 21010112111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198590810 + ... + 198591369.

It is an arithmetic number, because the mean of its divisors is an integer number (8936599050).

Almost surely, 2^111211010120 is an apocalyptic number.

111211010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211010120 is an abundant number, since it is smaller than the sum of its proper divisors (174760159480).

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

111211010120 is a wasteful number, since it uses less digits than its factorization.

111211010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397182197 (or 397182193 counting only the distinct ones).

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

Adding to 111211010120 its reverse (21010112111), we get a palindrome (132221122231).

The spelling of 111211010120 in words is "one hundred eleven billion, two hundred eleven million, ten thousand, one hundred twenty".