111020002121 has 24 divisors (see below), whose sum is σ = 134918025984. Its totient is φ = 90980699040.

The previous prime is 111020002117. The next prime is 111020002129. The reversal of 111020002121 is 121200020111.

It is not a de Polignac number, because 111020002121 - 2² = 111020002117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111020002129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314210 + ... + 566363.

It is an arithmetic number, because the mean of its divisors is an integer number (5621584416).

Almost surely, 2^111020002121 is an apocalyptic number.

It is an amenable number.

111020002121 is a deficient number, since it is larger than the sum of its proper divisors (23898023863).

111020002121 is an equidigital number, since it uses as much as digits as its factorization.

111020002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880701 (or 880694 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111020002121 its reverse (121200020111), we get a palindrome (232220022232).

The spelling of 111020002121 in words is "one hundred eleven billion, twenty million, two thousand, one hundred twenty-one".