202231222121 has 8 divisors (see below), whose sum is σ = 203606994624. Its totient is φ = 200859387120.

The previous prime is 202231222091. The next prime is 202231222169. The reversal of 202231222121 is 121222132202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202231222121 - 2²² = 202227027817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202231222093 and 202231222102.

It is not an unprimeable number, because it can be changed into a prime (202231222421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881270 + ... + 1086783.

It is an arithmetic number, because the mean of its divisors is an integer number (25450874328).

Almost surely, 2^202231222121 is an apocalyptic number.

It is an amenable number.

202231222121 is a deficient number, since it is larger than the sum of its proper divisors (1375772503).

202231222121 is a wasteful number, since it uses less digits than its factorization.

202231222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968751.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 202231222121 its reverse (121222132202), we get a palindrome (323453354323).

The spelling of 202231222121 in words is "two hundred two billion, two hundred thirty-one million, two hundred twenty-two thousand, one hundred twenty-one".