23151122117 has 2 divisors, whose sum is σ = 23151122118. Its totient is φ = 23151122116.

The previous prime is 23151122101. The next prime is 23151122129. The reversal of 23151122117 is 71122115132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21710843716 + 1440278401 = 147346^2 + 37951^2 .

It is a cyclic number.

It is not a de Polignac number, because 23151122117 - 2⁴ = 23151122101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23151122317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11575561058 + 11575561059.

It is an arithmetic number, because the mean of its divisors is an integer number (11575561059).

Almost surely, 2^23151122117 is an apocalyptic number.

It is an amenable number.

23151122117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23151122117 is an equidigital number, since it uses as much as digits as its factorization.

23151122117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 26.

Adding to 23151122117 its reverse (71122115132), we get a palindrome (94273237249).

The spelling of 23151122117 in words is "twenty-three billion, one hundred fifty-one million, one hundred twenty-two thousand, one hundred seventeen".