102312112221321 has 4 divisors (see below), whose sum is σ = 136416149628432. Its totient is φ = 68208074814212.

The previous prime is 102312112221317. The next prime is 102312112221349. The reversal of 102312112221321 is 123122211213201.

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 102312112221321 - 2² = 102312112221317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102312112221291 and 102312112221300.

It is not an unprimeable number, because it can be changed into a prime (102312112231321) 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 3 ways as a sum of consecutive naturals, for example, 17052018703551 + ... + 17052018703556.

It is an arithmetic number, because the mean of its divisors is an integer number (34104037407108).

Almost surely, 2^{102312112221321} is an apocalyptic number.

It is an amenable number.

102312112221321 is a deficient number, since it is larger than the sum of its proper divisors (34104037407111).

102312112221321 is an equidigital number, since it uses as much as digits as its factorization.

102312112221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34104037407110.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 102312112221321 its reverse (123122211213201), we get a palindrome (225434323434522).

The spelling of 102312112221321 in words is "one hundred two trillion, three hundred twelve billion, one hundred twelve million, two hundred twenty-one thousand, three hundred twenty-one".