103215012321 has 16 divisors (see below), whose sum is σ = 146241379584. Its totient is φ = 64528552704.

The previous prime is 103215012301. The next prime is 103215012331. The reversal of 103215012321 is 123210512301.

It is not a de Polignac number, because 103215012321 - 2⁷ = 103215012193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103215012301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3638985 + ... + 3667238.

It is an arithmetic number, because the mean of its divisors is an integer number (9140086224).

Almost surely, 2^103215012321 is an apocalyptic number.

It is an amenable number.

103215012321 is a deficient number, since it is larger than the sum of its proper divisors (43026367263).

103215012321 is a wasteful number, since it uses less digits than its factorization.

103215012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306520.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 103215012321 its reverse (123210512301), we get a palindrome (226425524622).

The spelling of 103215012321 in words is "one hundred three billion, two hundred fifteen million, twelve thousand, three hundred twenty-one".