23212113251 has 2 divisors, whose sum is σ = 23212113252. Its totient is φ = 23212113250.

The previous prime is 23212113209. The next prime is 23212113263. The reversal of 23212113251 is 15231121232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23212113251 - 2⁶ = 23212113187 is a prime.

It is not a weakly prime, because it can be changed into another prime (23212113451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606056625 + 11606056626.

It is an arithmetic number, because the mean of its divisors is an integer number (11606056626).

Almost surely, 2^23212113251 is an apocalyptic number.

23212113251 is a deficient number, since it is larger than the sum of its proper divisors (1).

23212113251 is an equidigital number, since it uses as much as digits as its factorization.

23212113251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

Adding to 23212113251 its reverse (15231121232), we get a palindrome (38443234483).

The spelling of 23212113251 in words is "twenty-three billion, two hundred twelve million, one hundred thirteen thousand, two hundred fifty-one".