202102211122101 has 6 divisors (see below), whose sum is σ = 291925416065270. Its totient is φ = 134734807414728.

The previous prime is 202102211122087. The next prime is 202102211122151. The reversal of 202102211122101 is 101221112201202.

202102211122101 is a `hidden beast` number, since 2 + 0 + 210 + 221 + 11 + 221 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 176435565239025 + 25666645883076 = 13282905^2 + 5066226^2 .

It is not a de Polignac number, because 202102211122101 - 2⁴³ = 193306118099893 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 (202102211122151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11227900617886 + ... + 11227900617903.

Almost surely, 2^{202102211122101} is an apocalyptic number.

It is an amenable number.

202102211122101 is a deficient number, since it is larger than the sum of its proper divisors (89823204943169).

202102211122101 is a wasteful number, since it uses less digits than its factorization.

202102211122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22455801235795 (or 22455801235792 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202102211122101 its reverse (101221112201202), we get a palindrome (303323323323303).

The spelling of 202102211122101 in words is "two hundred two trillion, one hundred two billion, two hundred eleven million, one hundred twenty-two thousand, one hundred one".