202212220132121 has 4 divisors (see below), whose sum is σ = 202351388901732. Its totient is φ = 202073051362512.

The previous prime is 202212220132079. The next prime is 202212220132129. The reversal of 202212220132121 is 121231022212202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 194743280952025 + 7468939180096 = 13955045^2 + 2732936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202212220132121 is a prime.

It is a super-3 number, since 3×202212220132121³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202212220132129) 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, 69584382626 + ... + 69584385531.

It is an arithmetic number, because the mean of its divisors is an integer number (50587847225433).

Almost surely, 2^{202212220132121} is an apocalyptic number.

It is an amenable number.

202212220132121 is a deficient number, since it is larger than the sum of its proper divisors (139168769611).

202212220132121 is a wasteful number, since it uses less digits than its factorization.

202212220132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139168769610.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 202212220132121 its reverse (121231022212202), we get a palindrome (323443242344323).

The spelling of 202212220132121 in words is "two hundred two trillion, two hundred twelve billion, two hundred twenty million, one hundred thirty-two thousand, one hundred twenty-one".