102220031321 has 4 divisors (see below), whose sum is σ = 103659750144. Its totient is φ = 100780312500.

The previous prime is 102220031299. The next prime is 102220031327. The reversal of 102220031321 is 123130022201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123130022201 = 179 ⋅687877219.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220031321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102220031321.

It is not an unprimeable number, because it can be changed into a prime (102220031327) 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, 719859305 + ... + 719859446.

It is an arithmetic number, because the mean of its divisors is an integer number (25914937536).

Almost surely, 2^102220031321 is an apocalyptic number.

It is an amenable number.

102220031321 is a deficient number, since it is larger than the sum of its proper divisors (1439718823).

102220031321 is an equidigital number, since it uses as much as digits as its factorization.

102220031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439718822.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102220031321 its reverse (123130022201), we get a palindrome (225350053522).

The spelling of 102220031321 in words is "one hundred two billion, two hundred twenty million, thirty-one thousand, three hundred twenty-one".