111210020121 has 16 divisors (see below), whose sum is σ = 148716163008. Its totient is φ = 73922112000.

The previous prime is 111210020039. The next prime is 111210020167. The reversal of 111210020121 is 121020012111.

It is not a de Polignac number, because 111210020121 - 2¹⁰ = 111210019097 is a prime.

It is a super-3 number, since 3×111210020121³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111210020097 and 111210020106.

It is not an unprimeable number, because it can be changed into a prime (111210020171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2840086 + ... + 2878976.

It is an arithmetic number, because the mean of its divisors is an integer number (9294760188).

Almost surely, 2^111210020121 is an apocalyptic number.

It is an amenable number.

111210020121 is a deficient number, since it is larger than the sum of its proper divisors (37506142887).

111210020121 is a wasteful number, since it uses less digits than its factorization.

111210020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41672.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111210020121 its reverse (121020012111), we get a palindrome (232230032232).

The spelling of 111210020121 in words is "one hundred eleven billion, two hundred ten million, twenty thousand, one hundred twenty-one".