202222120021 has 4 divisors (see below), whose sum is σ = 202755688000. Its totient is φ = 201688552044.

The previous prime is 202222120019. The next prime is 202222120027. The reversal of 202222120021 is 120021222202.

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 202222120021 - 2¹ = 202222120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202222119977 and 202222120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222120027) 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, 266783421 + ... + 266784178.

It is an arithmetic number, because the mean of its divisors is an integer number (50688922000).

Almost surely, 2^202222120021 is an apocalyptic number.

It is an amenable number.

202222120021 is a deficient number, since it is larger than the sum of its proper divisors (533567979).

202222120021 is an equidigital number, since it uses as much as digits as its factorization.

202222120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533567978.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202222120021 its reverse (120021222202), we get a palindrome (322243342223).

The spelling of 202222120021 in words is "two hundred two billion, two hundred twenty-two million, one hundred twenty thousand, twenty-one".