22105104257 has 2 divisors, whose sum is σ = 22105104258. Its totient is φ = 22105104256.

The previous prime is 22105104251. The next prime is 22105104323. The reversal of 22105104257 is 75240150122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11611355536 + 10493748721 = 107756^2 + 102439^2 .

It is a cyclic number.

It is not a de Polignac number, because 22105104257 - 2⁶ = 22105104193 is a prime.

It is not a weakly prime, because it can be changed into another prime (22105104251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11052552128 + 11052552129.

It is an arithmetic number, because the mean of its divisors is an integer number (11052552129).

Almost surely, 2^22105104257 is an apocalyptic number.

It is an amenable number.

22105104257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22105104257 is an equidigital number, since it uses as much as digits as its factorization.

22105104257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

Adding to 22105104257 its reverse (75240150122), we get a palindrome (97345254379).

The spelling of 22105104257 in words is "twenty-two billion, one hundred five million, one hundred four thousand, two hundred fifty-seven".