22638151321 has 2 divisors, whose sum is σ = 22638151322. Its totient is φ = 22638151320.

The previous prime is 22638151267. The next prime is 22638151363. The reversal of 22638151321 is 12315183622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12307461721 + 10330689600 = 110939^2 + 101640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22638151321 is a prime.

It is not a weakly prime, because it can be changed into another prime (22638151381) by changing a digit.

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 as a sum of consecutive naturals, namely, 11319075660 + 11319075661.

It is an arithmetic number, because the mean of its divisors is an integer number (11319075661).

Almost surely, 2^22638151321 is an apocalyptic number.

It is an amenable number.

22638151321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22638151321 is an equidigital number, since it uses as much as digits as its factorization.

22638151321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The spelling of 22638151321 in words is "twenty-two billion, six hundred thirty-eight million, one hundred fifty-one thousand, three hundred twenty-one".