12251421412 has 12 divisors (see below), whose sum is σ = 21759987760. Its totient is φ = 6034282056.

The previous prime is 12251421397. The next prime is 12251421439. The reversal of 12251421412 is 21412415221.

It is a super-2 number, since 2×12251421412² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22856862 + ... + 22857397.

Almost surely, 2^12251421412 is an apocalyptic number.

It is an amenable number.

12251421412 is a deficient number, since it is larger than the sum of its proper divisors (9508566348).

12251421412 is a wasteful number, since it uses less digits than its factorization.

12251421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714330 (or 45714328 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

Adding to 12251421412 its reverse (21412415221), we get a palindrome (33663836633).

The spelling of 12251421412 in words is "twelve billion, two hundred fifty-one million, four hundred twenty-one thousand, four hundred twelve".