22150533521 has 2 divisors, whose sum is σ = 22150533522. Its totient is φ = 22150533520.

The previous prime is 22150533499. The next prime is 22150533527. The reversal of 22150533521 is 12533505122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21311620225 + 838913296 = 145985^2 + 28964^2 .

It is a cyclic number.

It is not a de Polignac number, because 22150533521 - 2²² = 22146339217 is a prime.

It is a super-2 number, since 2×22150533521² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22150533527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11075266760 + 11075266761.

It is an arithmetic number, because the mean of its divisors is an integer number (11075266761).

Almost surely, 2^22150533521 is an apocalyptic number.

It is an amenable number.

22150533521 is a deficient number, since it is larger than the sum of its proper divisors (1).

22150533521 is an equidigital number, since it uses as much as digits as its factorization.

22150533521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 22150533521 in words is "twenty-two billion, one hundred fifty million, five hundred thirty-three thousand, five hundred twenty-one".