21227112325 has 24 divisors (see below), whose sum is σ = 27029984256. Its totient is φ = 16527504000.

The previous prime is 21227112311. The next prime is 21227112337. The reversal of 21227112325 is 52321172212.

It is not a de Polignac number, because 21227112325 - 2⁹ = 21227111813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21227112293 and 21227112302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266940 + ... + 337210.

It is an arithmetic number, because the mean of its divisors is an integer number (1126249344).

Almost surely, 2^21227112325 is an apocalyptic number.

21227112325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21227112325 is a deficient number, since it is larger than the sum of its proper divisors (5802871931).

21227112325 is a wasteful number, since it uses less digits than its factorization.

21227112325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70605 (or 70600 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

Adding to 21227112325 its reverse (52321172212), we get a palindrome (73548284537).

The spelling of 21227112325 in words is "twenty-one billion, two hundred twenty-seven million, one hundred twelve thousand, three hundred twenty-five".