111002112021 has 16 divisors (see below), whose sum is σ = 154869946880. Its totient is φ = 70633244160.

The previous prime is 111002112019. The next prime is 111002112041. The reversal of 111002112021 is 120211200111.

It is not a de Polignac number, because 111002112021 - 2¹ = 111002112019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002111988 and 111002112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002112041) 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, 8168356 + ... + 8181933.

It is an arithmetic number, because the mean of its divisors is an integer number (9679371680).

Almost surely, 2^111002112021 is an apocalyptic number.

It is an amenable number.

111002112021 is a deficient number, since it is larger than the sum of its proper divisors (43867834859).

111002112021 is a wasteful number, since it uses less digits than its factorization.

111002112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16350396.

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

Adding to 111002112021 its reverse (120211200111), we get a palindrome (231213312132).

The spelling of 111002112021 in words is "one hundred eleven billion, two million, one hundred twelve thousand, twenty-one".