23111222257 has 2 divisors, whose sum is σ = 23111222258. Its totient is φ = 23111222256.

The previous prime is 23111222201. The next prime is 23111222353. The reversal of 23111222257 is 75222211132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14839137856 + 8272084401 = 121816^2 + 90951^2 .

It is a cyclic number.

It is not a de Polignac number, because 23111222257 - 2¹⁹ = 23110697969 is a prime.

It is not a weakly prime, because it can be changed into another prime (23111222957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555611128 + 11555611129.

It is an arithmetic number, because the mean of its divisors is an integer number (11555611129).

Almost surely, 2^23111222257 is an apocalyptic number.

It is an amenable number.

23111222257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111222257 is an equidigital number, since it uses as much as digits as its factorization.

23111222257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

Adding to 23111222257 its reverse (75222211132), we get a palindrome (98333433389).

The spelling of 23111222257 in words is "twenty-three billion, one hundred eleven million, two hundred twenty-two thousand, two hundred fifty-seven".