202312221313221 has 8 divisors (see below), whose sum is σ = 299721809352960. Its totient is φ = 134874814208796.

The previous prime is 202312221313217. The next prime is 202312221313249. The reversal of 202312221313221 is 122313122213202.

202312221313221 is a `hidden beast` number, since 2 + 0 + 2 + 3 + 122 + 2 + 1 + 313 + 221 = 666.

It is not a de Polignac number, because 202312221313221 - 2² = 202312221313217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7493045233823 = 202312221313221 / (2 + 0 + 2 + 3 + 1 + 2 + 2 + 2 + 1 + 3 + 1 + 3 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202312221314221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3746522616885 + ... + 3746522616938.

It is an arithmetic number, because the mean of its divisors is an integer number (37465226169120).

Almost surely, 2^{202312221313221} is an apocalyptic number.

It is an amenable number.

202312221313221 is a deficient number, since it is larger than the sum of its proper divisors (97409588039739).

202312221313221 is an equidigital number, since it uses as much as digits as its factorization.

202312221313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7493045233832 (or 7493045233826 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 202312221313221 its reverse (122313122213202), we get a palindrome (324625343526423).

The spelling of 202312221313221 in words is "two hundred two trillion, three hundred twelve billion, two hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-one".