21224022205131 has 12 divisors (see below), whose sum is σ = 30658880951608. Its totient is φ = 14148443526624.

The previous prime is 21224022205097. The next prime is 21224022205159. The reversal of 21224022205131 is 13150222042212.

21224022205131 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 402 + 220 + 5 + 1 + 31 = 666.

It is not a de Polignac number, because 21224022205131 - 2¹⁰ = 21224022204107 is a prime.

It is a super-2 number, since 2×21224022205131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21224022205095 and 21224022205104.

It is not an unprimeable number, because it can be changed into a prime (21224022205181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75235570 + ... + 75517143.

Almost surely, 2^{21224022205131} is an apocalyptic number.

21224022205131 is a deficient number, since it is larger than the sum of its proper divisors (9434858746477).

21224022205131 is a wasteful number, since it uses less digits than its factorization.

21224022205131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150768362 (or 150768359 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21224022205131 its reverse (13150222042212), we get a palindrome (34374244247343).

The spelling of 21224022205131 in words is "twenty-one trillion, two hundred twenty-four billion, twenty-two million, two hundred five thousand, one hundred thirty-one".