202121101121202 has 24 divisors (see below), whose sum is σ = 442264983645420. Its totient is φ = 66706634032800.

The previous prime is 202121101121171. The next prime is 202121101121213.

202121101121202 is a `hidden beast` number, since 20 + 212 + 110 + 1 + 121 + 202 = 666.

202121101121202 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 179468060971761 + 22653040149441 = 13396569^2 + 4759521^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55588859877 + ... + 55588863512.

Almost surely, 2^{202121101121202} is an apocalyptic number.

202121101121202 is an abundant number, since it is smaller than the sum of its proper divisors (240143882524218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202121101121202 is a wasteful number, since it uses less digits than its factorization.

202121101121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111177723498 (or 111177723495 counting only the distinct ones).

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

It can be divided in two parts, 20212110 and 1121202, that added together give a palindrome (21333312).

The spelling of 202121101121202 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, two hundred two".