22101012257 has 2 divisors, whose sum is σ = 22101012258. Its totient is φ = 22101012256.

The previous prime is 22101012253. The next prime is 22101012377. The reversal of 22101012257 is 75221010122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19901027041 + 2199985216 = 141071^2 + 46904^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101012257 - 2² = 22101012253 is a prime.

It is not a weakly prime, because it can be changed into another prime (22101012253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050506128 + 11050506129.

It is an arithmetic number, because the mean of its divisors is an integer number (11050506129).

Almost surely, 2^22101012257 is an apocalyptic number.

It is an amenable number.

22101012257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101012257 is an equidigital number, since it uses as much as digits as its factorization.

22101012257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 22101012257 its reverse (75221010122), we get a palindrome (97322022379).

The spelling of 22101012257 in words is "twenty-two billion, one hundred one million, twelve thousand, two hundred fifty-seven".