12503220231 has 64 divisors (see below), whose sum is σ = 18393661440. Its totient is φ = 7523389440.

The previous prime is 12503220229. The next prime is 12503220239. The reversal of 12503220231 is 13202230521.

It is not a de Polignac number, because 12503220231 - 2¹ = 12503220229 is a prime.

It is a super-2 number, since 2×12503220231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12503220198 and 12503220207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503220239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52314610 + ... + 52314848.

It is an arithmetic number, because the mean of its divisors is an integer number (287400960).

Almost surely, 2^12503220231 is an apocalyptic number.

12503220231 is a deficient number, since it is larger than the sum of its proper divisors (5890441209).

12503220231 is a wasteful number, since it uses less digits than its factorization.

12503220231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 12503220231 its reverse (13202230521), we get a palindrome (25705450752).

The spelling of 12503220231 in words is "twelve billion, five hundred three million, two hundred twenty thousand, two hundred thirty-one".