12612622251 has 4 divisors (see below), whose sum is σ = 16816829672. Its totient is φ = 8408414832.

The previous prime is 12612622247. The next prime is 12612622289. The reversal of 12612622251 is 15222621621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15222621621 = 3 ⋅5074207207.

It is not a de Polignac number, because 12612622251 - 2² = 12612622247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12612622291) 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, 2102103706 + ... + 2102103711.

It is an arithmetic number, because the mean of its divisors is an integer number (4204207418).

Almost surely, 2^12612622251 is an apocalyptic number.

12612622251 is a deficient number, since it is larger than the sum of its proper divisors (4204207421).

12612622251 is an equidigital number, since it uses as much as digits as its factorization.

12612622251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204207420.

The product of its digits is 5760, while the sum is 30.

The spelling of 12612622251 in words is "twelve billion, six hundred twelve million, six hundred twenty-two thousand, two hundred fifty-one".