210022202220021 has 64 divisors (see below), whose sum is σ = 336626175283200. Its totient is φ = 128909637980928.

The previous prime is 210022202220013. The next prime is 210022202220097. The reversal of 210022202220021 is 120022202220012.

It is not a de Polignac number, because 210022202220021 - 2³ = 210022202220013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210022202219976 and 210022202220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210022202221021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40233286 + ... + 45152648.

It is an arithmetic number, because the mean of its divisors is an integer number (5259783988800).

Almost surely, 2^{210022202220021} is an apocalyptic number.

It is an amenable number.

210022202220021 is a deficient number, since it is larger than the sum of its proper divisors (126603973063179).

210022202220021 is a wasteful number, since it uses less digits than its factorization.

210022202220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921415 (or 4921409 counting only the distinct ones).

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

Adding to 210022202220021 its reverse (120022202220012), we get a palindrome (330044404440033).

Subtracting from 210022202220021 its reverse (120022202220012), we obtain a palindrome (90000000000009).

The spelling of 210022202220021 in words is "two hundred ten trillion, twenty-two billion, two hundred two million, two hundred twenty thousand, twenty-one".