22133973521 has 6 divisors (see below), whose sum is σ = 24329078466. Its totient is φ = 20121794000.

The previous prime is 22133973517. The next prime is 22133973523. The reversal of 22133973521 is 12537933122.

It can be written as a sum of positive squares in only one way, i.e., 12601185025 + 9532788496 = 112255^2 + 97636^2 .

It is not a de Polignac number, because 22133973521 - 2² = 22133973517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22133973523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91462580 + ... + 91462821.

It is an arithmetic number, because the mean of its divisors is an integer number (4054846411).

Almost surely, 2^22133973521 is an apocalyptic number.

It is an amenable number.

22133973521 is a deficient number, since it is larger than the sum of its proper divisors (2195104945).

22133973521 is a wasteful number, since it uses less digits than its factorization.

22133973521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182925423 (or 182925412 counting only the distinct ones).

The product of its digits is 68040, while the sum is 38.

The spelling of 22133973521 in words is "twenty-two billion, one hundred thirty-three million, nine hundred seventy-three thousand, five hundred twenty-one".