111010200002021 has 4 divisors (see below), whose sum is σ = 111319420615200. Its totient is φ = 110700979388844.

The previous prime is 111010200001993. The next prime is 111010200002063. The reversal of 111010200002021 is 120200002010111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111010200002021 - 2¹⁸ = 111010199739877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111010200001993 and 111010200002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010200002321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154610306051 + ... + 154610306768.

It is an arithmetic number, because the mean of its divisors is an integer number (27829855153800).

Almost surely, 2^{111010200002021} is an apocalyptic number.

It is an amenable number.

111010200002021 is a deficient number, since it is larger than the sum of its proper divisors (309220613179).

111010200002021 is an equidigital number, since it uses as much as digits as its factorization.

111010200002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309220613178.

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

Adding to 111010200002021 its reverse (120200002010111), we get a palindrome (231210202012132).

The spelling of 111010200002021 in words is "one hundred eleven trillion, ten billion, two hundred million, two thousand, twenty-one".