202110102022221 has 24 divisors (see below), whose sum is σ = 298488199935744. Its totient is φ = 131722889220000.

The previous prime is 202110102022181. The next prime is 202110102022247. The reversal of 202110102022221 is 122220201011202.

It is a happy number.

202110102022221 is a `hidden beast` number, since 20 + 211 + 0 + 10 + 202 + 2 + 221 = 666.

It is not a de Polignac number, because 202110102022221 - 2²² = 202110097827917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202110102022194 and 202110102022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110102022271) 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, 272035905 + ... + 272777846.

It is an arithmetic number, because the mean of its divisors is an integer number (12437008330656).

Almost surely, 2^{202110102022221} is an apocalyptic number.

It is an amenable number.

202110102022221 is a deficient number, since it is larger than the sum of its proper divisors (96378097913523).

202110102022221 is a wasteful number, since it uses less digits than its factorization.

202110102022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544814681 (or 544814678 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202110102022221 its reverse (122220201011202), we get a palindrome (324330303033423).

The spelling of 202110102022221 in words is "two hundred two trillion, one hundred ten billion, one hundred two million, twenty-two thousand, two hundred twenty-one".