111012202101021 has 96 divisors (see below), whose sum is σ = 161968658417280. Its totient is φ = 67598151708672.

The previous prime is 111012202101013. The next prime is 111012202101041. The reversal of 111012202101021 is 120101202210111.

It is a happy number.

It is not a de Polignac number, because 111012202101021 - 2³ = 111012202101013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012202101041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58030423561 + ... + 58030425473.

It is an arithmetic number, because the mean of its divisors is an integer number (1687173525180).

Almost surely, 2^{111012202101021} is an apocalyptic number.

It is an amenable number.

111012202101021 is a deficient number, since it is larger than the sum of its proper divisors (50956456316259).

111012202101021 is a wasteful number, since it uses less digits than its factorization.

111012202101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111012202101021 its reverse (120101202210111), we get a palindrome (231113404311132).

The spelling of 111012202101021 in words is "one hundred eleven trillion, twelve billion, two hundred two million, one hundred one thousand, twenty-one".