22143501257 has 2 divisors, whose sum is σ = 22143501258. Its totient is φ = 22143501256.

The previous prime is 22143501173. The next prime is 22143501271. The reversal of 22143501257 is 75210534122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20693110201 + 1450391056 = 143851^2 + 38084^2 .

It is a cyclic number.

It is not a de Polignac number, because 22143501257 - 2⁸ = 22143501001 is a prime.

It is not a weakly prime, because it can be changed into another prime (22143500257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071750628 + 11071750629.

It is an arithmetic number, because the mean of its divisors is an integer number (11071750629).

Almost surely, 2^22143501257 is an apocalyptic number.

It is an amenable number.

22143501257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22143501257 is an equidigital number, since it uses as much as digits as its factorization.

22143501257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 22143501257 in words is "twenty-two billion, one hundred forty-three million, five hundred one thousand, two hundred fifty-seven".