202102200222021 has 24 divisors (see below), whose sum is σ = 320895096556320. Its totient is φ = 121551172922400.

The previous prime is 202102200222007. The next prime is 202102200222023. The reversal of 202102200222021 is 120222002201202.

202102200222021 is a `hidden beast` number, since 202 + 1 + 0 + 220 + 0 + 2 + 220 + 21 = 666.

It is not a de Polignac number, because 202102200222021 - 2³⁸ = 201827322315077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202102200221985 and 202102200222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102200222023) 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, 7791728886 + ... + 7791754823.

It is an arithmetic number, because the mean of its divisors is an integer number (13370629023180).

Almost surely, 2^{202102200222021} is an apocalyptic number.

It is an amenable number.

202102200222021 is a deficient number, since it is larger than the sum of its proper divisors (118792896334299).

202102200222021 is a wasteful number, since it uses less digits than its factorization.

202102200222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15583483857 (or 15583483854 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202102200222021 its reverse (120222002201202), we get a palindrome (322324202423223).

The spelling of 202102200222021 in words is "two hundred two trillion, one hundred two billion, two hundred million, two hundred twenty-two thousand, twenty-one".