202112111021 has 16 divisors (see below), whose sum is σ = 208884417408. Its totient is φ = 195450964800.

The previous prime is 202112110999. The next prime is 202112111057. The reversal of 202112111021 is 120111211202.

202112111021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 202112111021 - 2¹⁴ = 202112094637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202112110987 and 202112111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202114111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21899810 + ... + 21909036.

It is an arithmetic number, because the mean of its divisors is an integer number (13055276088).

Almost surely, 2^202112111021 is an apocalyptic number.

It is an amenable number.

202112111021 is a deficient number, since it is larger than the sum of its proper divisors (6772306387).

202112111021 is an equidigital number, since it uses as much as digits as its factorization.

202112111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 202112111021 its reverse (120111211202), we get a palindrome (322223322223).

The spelling of 202112111021 in words is "two hundred two billion, one hundred twelve million, one hundred eleven thousand, twenty-one".