202121112112202 has 4 divisors (see below), whose sum is σ = 303181668168306. Its totient is φ = 101060556056100.

The previous prime is 202121112112141. The next prime is 202121112112217. The reversal of 202121112112202 is 202211211121202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121574418114241 + 80546693997961 = 11026079^2 + 8974781^2 .

It is a super-2 number, since 2×202121112112202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50530278028049 + ... + 50530278028052.

Almost surely, 2^{202121112112202} is an apocalyptic number.

202121112112202 is a deficient number, since it is larger than the sum of its proper divisors (101060556056104).

202121112112202 is a wasteful number, since it uses less digits than its factorization.

202121112112202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101060556056103.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 202121112112202 its reverse (202211211121202), we get a palindrome (404332323233404).

The spelling of 202121112112202 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, two hundred two".