202110200212221 has 80 divisors (see below), whose sum is σ = 360086021019648. Its totient is φ = 110459404836000.

The previous prime is 202110200212189. The next prime is 202110200212229. The reversal of 202110200212221 is 122212002011202.

It is a happy number.

202110200212221 is a `hidden beast` number, since 2 + 0 + 21 + 10 + 200 + 212 + 221 = 666.

It is not a de Polignac number, because 202110200212221 - 2⁵ = 202110200212189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202110200212194 and 202110200212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202110200212229) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 133976496 + ... + 135476646.

Almost surely, 2^{202110200212221} is an apocalyptic number.

202110200212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202110200212221 is a deficient number, since it is larger than the sum of its proper divisors (157975820807427).

202110200212221 is a wasteful number, since it uses less digits than its factorization.

202110200212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510524 (or 1510515 counting only the distinct ones).

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

Adding to 202110200212221 its reverse (122212002011202), we get a palindrome (324322202223423).

The spelling of 202110200212221 in words is "two hundred two trillion, one hundred ten billion, two hundred million, two hundred twelve thousand, two hundred twenty-one".