12207261251 has 4 divisors (see below), whose sum is σ = 12601043904. Its totient is φ = 11813478600.

The previous prime is 12207261229. The next prime is 12207261263. The reversal of 12207261251 is 15216270221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15216270221 = 59093 ⋅257497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12207261251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12207261211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196891280 + ... + 196891341.

It is an arithmetic number, because the mean of its divisors is an integer number (3150260976).

Almost surely, 2^12207261251 is an apocalyptic number.

12207261251 is a deficient number, since it is larger than the sum of its proper divisors (393782653).

12207261251 is an equidigital number, since it uses as much as digits as its factorization.

12207261251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393782652.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 12207261251 in words is "twelve billion, two hundred seven million, two hundred sixty-one thousand, two hundred fifty-one".