21222014632025 has 12 divisors (see below), whose sum is σ = 26316232151484. Its totient is φ = 16977009120000.

The previous prime is 21222014631967. The next prime is 21222014632037. The reversal of 21222014632025 is 52023641022212.

It can be written as a sum of positive squares in 6 ways, for example, as 4003564793881 + 17218449838144 = 2000891^2 + 4149512^2 .

It is not a de Polignac number, because 21222014632025 - 2²² = 21222010437721 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222014631982 and 21222014632000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14345516 + ... + 15755565.

It is an arithmetic number, because the mean of its divisors is an integer number (2193019345957).

Almost surely, 2^{21222014632025} is an apocalyptic number.

21222014632025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21222014632025 is a deficient number, since it is larger than the sum of its proper divisors (5094217519459).

21222014632025 is a wasteful number, since it uses less digits than its factorization.

21222014632025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30129292 (or 30129287 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 21222014632025 its reverse (52023641022212), we get a palindrome (73245655654237).

The spelling of 21222014632025 in words is "twenty-one trillion, two hundred twenty-two billion, fourteen million, six hundred thirty-two thousand, twenty-five".