23100121157 has 2 divisors, whose sum is σ = 23100121158. Its totient is φ = 23100121156.

The previous prime is 23100121069. The next prime is 23100121223. The reversal of 23100121157 is 75112100132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12128396641 + 10971724516 = 110129^2 + 104746^2 .

It is a cyclic number.

It is not a de Polignac number, because 23100121157 - 2¹⁶ = 23100055621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23100120157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11550060578 + 11550060579.

It is an arithmetic number, because the mean of its divisors is an integer number (11550060579).

Almost surely, 2^23100121157 is an apocalyptic number.

It is an amenable number.

23100121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

23100121157 is an equidigital number, since it uses as much as digits as its factorization.

23100121157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

Adding to 23100121157 its reverse (75112100132), we get a palindrome (98212221289).

The spelling of 23100121157 in words is "twenty-three billion, one hundred million, one hundred twenty-one thousand, one hundred fifty-seven".