202220202220021 has 24 divisors (see below), whose sum is σ = 207357524659584. Its totient is φ = 197206192296480.

The previous prime is 202220202220013. The next prime is 202220202220073. The reversal of 202220202220021 is 120022202022202.

It is not a de Polignac number, because 202220202220021 - 2³ = 202220202220013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220202221021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1850033656 + ... + 1850142958.

It is an arithmetic number, because the mean of its divisors is an integer number (8639896860816).

Almost surely, 2^{202220202220021} is an apocalyptic number.

It is an amenable number.

202220202220021 is a deficient number, since it is larger than the sum of its proper divisors (5137322439563).

202220202220021 is a wasteful number, since it uses less digits than its factorization.

202220202220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112401 (or 112354 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 202220202220021 its reverse (120022202022202), we get a palindrome (322242404242223).

The spelling of 202220202220021 in words is "two hundred two trillion, two hundred twenty billion, two hundred two million, two hundred twenty thousand, twenty-one".