111012102001021 has 32 divisors (see below), whose sum is σ = 122469589605888. Its totient is φ = 99984991180800.

The previous prime is 111012102000967. The next prime is 111012102001117. The reversal of 111012102001021 is 120100201210111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111012102001021 - 2³³ = 111003512066429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012102000992 and 111012102001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012102041021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 959947215 + ... + 960062851.

It is an arithmetic number, because the mean of its divisors is an integer number (3827174675184).

Almost surely, 2^{111012102001021} is an apocalyptic number.

It is an amenable number.

111012102001021 is a deficient number, since it is larger than the sum of its proper divisors (11457487604867).

111012102001021 is a wasteful number, since it uses less digits than its factorization.

111012102001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120501.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012102001021 its reverse (120100201210111), we get a palindrome (231112303211132).

The spelling of 111012102001021 in words is "one hundred eleven trillion, twelve billion, one hundred two million, one thousand, twenty-one".