22232254222521 has 108 divisors (see below), whose sum is σ = 39043815739500. Its totient is φ = 12153516431616.

The previous prime is 22232254222517. The next prime is 22232254222559. The reversal of 22232254222521 is 12522245223222.

22232254222521 is a `hidden beast` number, since 2 + 2 + 2 + 3 + 225 + 422 + 2 + 5 + 2 + 1 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 5743972521 + 22226510250000 = 75789^2 + 4714500^2 .

It is not a de Polignac number, because 22232254222521 - 2² = 22232254222517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22232254222511) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 40151055 + ... + 40701003.

Almost surely, 2^{22232254222521} is an apocalyptic number.

22232254222521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22232254222521 is a deficient number, since it is larger than the sum of its proper divisors (16811561516979).

22232254222521 is a wasteful number, since it uses less digits than its factorization.

22232254222521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550136 (or 550097 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

Adding to 22232254222521 its reverse (12522245223222), we get a palindrome (34754499445743).

The spelling of 22232254222521 in words is "twenty-two trillion, two hundred thirty-two billion, two hundred fifty-four million, two hundred twenty-two thousand, five hundred twenty-one".