22131221335425 has 48 divisors (see below), whose sum is σ = 40656364631680. Its totient is φ = 11803175392320.

The previous prime is 22131221335373. The next prime is 22131221335493. The reversal of 22131221335425 is 52453312213122.

22131221335425 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 1 + 221 + 3 + 3 + 5 + 425 = 666.

It is not a de Polignac number, because 22131221335425 - 2¹⁴ = 22131221319041 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22131221335425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79310247 + ... + 79588803.

Almost surely, 2^{22131221335425} is an apocalyptic number.

22131221335425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22131221335425 is a deficient number, since it is larger than the sum of its proper divisors (18525143296255).

22131221335425 is a wasteful number, since it uses less digits than its factorization.

22131221335425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396279 (or 396268 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 22131221335425 its reverse (52453312213122), we get a palindrome (74584533548547).

The spelling of 22131221335425 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred thirty-five thousand, four hundred twenty-five".