12221051325 has 48 divisors (see below), whose sum is σ = 23233798656. Its totient is φ = 5552452800.

The previous prime is 12221051299. The next prime is 12221051347. The reversal of 12221051325 is 52315012221.

It is not a de Polignac number, because 12221051325 - 2⁹ = 12221050813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12221051295 and 12221051304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14170 + ... + 156980.

It is an arithmetic number, because the mean of its divisors is an integer number (484037472).

Almost surely, 2^12221051325 is an apocalyptic number.

12221051325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12221051325 is a deficient number, since it is larger than the sum of its proper divisors (11012747331).

12221051325 is a wasteful number, since it uses less digits than its factorization.

12221051325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142994 (or 142989 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 12221051325 its reverse (52315012221), we get a palindrome (64536063546).

The spelling of 12221051325 in words is "twelve billion, two hundred twenty-one million, fifty-one thousand, three hundred twenty-five".