101312210321 has 24 divisors (see below), whose sum is σ = 120465138816. Its totient is φ = 84917505120.

The previous prime is 101312210317. The next prime is 101312210341. The reversal of 101312210321 is 123012213101.

It is not a de Polignac number, because 101312210321 - 2² = 101312210317 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 101312210321.

It is not an unprimeable number, because it can be changed into a prime (101312210341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2715131 + ... + 2752191.

It is an arithmetic number, because the mean of its divisors is an integer number (5019380784).

Almost surely, 2^101312210321 is an apocalyptic number.

It is an amenable number.

101312210321 is a deficient number, since it is larger than the sum of its proper divisors (19152928495).

101312210321 is a wasteful number, since it uses less digits than its factorization.

101312210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38309 (or 38302 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101312210321 its reverse (123012213101), we get a palindrome (224324423422).

The spelling of 101312210321 in words is "one hundred one billion, three hundred twelve million, two hundred ten thousand, three hundred twenty-one".