202231031221 has 8 divisors (see below), whose sum is σ = 214370040024. Its totient is φ = 190119029760.

The previous prime is 202231031201. The next prime is 202231031231. The reversal of 202231031221 is 122130132202.

It can be written as a sum of positive squares in 4 ways, for example, as 38068302321 + 164162728900 = 195111^2 + 405170^2 .

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 202231031221 - 2¹¹ = 202231029173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202231031201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6736410 + ... + 6766363.

It is an arithmetic number, because the mean of its divisors is an integer number (26796255003).

Almost surely, 2^202231031221 is an apocalyptic number.

It is an amenable number.

202231031221 is a deficient number, since it is larger than the sum of its proper divisors (12139008803).

202231031221 is a wasteful number, since it uses less digits than its factorization.

202231031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13503671.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 202231031221 its reverse (122130132202), we get a palindrome (324361163423).

The spelling of 202231031221 in words is "two hundred two billion, two hundred thirty-one million, thirty-one thousand, two hundred twenty-one".