202202102121 has 4 divisors (see below), whose sum is σ = 269602802832. Its totient is φ = 134801401412.

The previous prime is 202202102071. The next prime is 202202102129. The reversal of 202202102121 is 121201202202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202202102121 - 2⁷ = 202202101993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202202102121.

It is not an unprimeable number, because it can be changed into a prime (202202102129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33700350351 + ... + 33700350356.

It is an arithmetic number, because the mean of its divisors is an integer number (67400700708).

Almost surely, 2^202202102121 is an apocalyptic number.

It is an amenable number.

202202102121 is a deficient number, since it is larger than the sum of its proper divisors (67400700711).

202202102121 is an equidigital number, since it uses as much as digits as its factorization.

202202102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67400700710.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202202102121 its reverse (121201202202), we get a palindrome (323403304323).

The spelling of 202202102121 in words is "two hundred two billion, two hundred two million, one hundred two thousand, one hundred twenty-one".