22312520533 has 2 divisors, whose sum is σ = 22312520534. Its totient is φ = 22312520532.

The previous prime is 22312520521. The next prime is 22312520543. The reversal of 22312520533 is 33502521322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12476443204 + 9836077329 = 111698^2 + 99177^2 .

It is a cyclic number.

It is not a de Polignac number, because 22312520533 - 2³³ = 13722585941 is a prime.

It is a super-3 number, since 3×22312520533³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22312520543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11156260266 + 11156260267.

It is an arithmetic number, because the mean of its divisors is an integer number (11156260267).

Almost surely, 2^22312520533 is an apocalyptic number.

It is an amenable number.

22312520533 is a deficient number, since it is larger than the sum of its proper divisors (1).

22312520533 is an equidigital number, since it uses as much as digits as its factorization.

22312520533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 22312520533 in words is "twenty-two billion, three hundred twelve million, five hundred twenty thousand, five hundred thirty-three".