22838703721 has 2 divisors, whose sum is σ = 22838703722. Its totient is φ = 22838703720.

The previous prime is 22838703709. The next prime is 22838703743. The reversal of 22838703721 is 12730783822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18464733225 + 4373970496 = 135885^2 + 66136^2 .

It is a cyclic number.

It is not a de Polignac number, because 22838703721 - 2⁷ = 22838703593 is a prime.

It is not a weakly prime, because it can be changed into another prime (22838703781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11419351860 + 11419351861.

It is an arithmetic number, because the mean of its divisors is an integer number (11419351861).

Almost surely, 2^22838703721 is an apocalyptic number.

It is an amenable number.

22838703721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22838703721 is an equidigital number, since it uses as much as digits as its factorization.

22838703721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 22838703721 in words is "twenty-two billion, eight hundred thirty-eight million, seven hundred three thousand, seven hundred twenty-one".