102221302031 has 4 divisors (see below), whose sum is σ = 102271684200. Its totient is φ = 102170919864.

The previous prime is 102221301977. The next prime is 102221302103. The reversal of 102221302031 is 130203122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102221302031 is a prime.

It is a super-2 number, since 2×102221302031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221302331) 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, 25188041 + ... + 25192098.

It is an arithmetic number, because the mean of its divisors is an integer number (25567921050).

Almost surely, 2^102221302031 is an apocalyptic number.

102221302031 is a deficient number, since it is larger than the sum of its proper divisors (50382169).

102221302031 is an equidigital number, since it uses as much as digits as its factorization.

102221302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50382168.

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

Adding to 102221302031 its reverse (130203122201), we get a palindrome (232424424232).

The spelling of 102221302031 in words is "one hundred two billion, two hundred twenty-one million, three hundred two thousand, thirty-one".