12942199451 has 4 divisors (see below), whose sum is σ = 13029060000. Its totient is φ = 12855338904.

The previous prime is 12942199447. The next prime is 12942199463. The reversal of 12942199451 is 15499124921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12942199451 - 2² = 12942199447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12942199396 and 12942199405.

It is not an unprimeable number, because it can be changed into a prime (12942199471) 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, 43430051 + ... + 43430348.

It is an arithmetic number, because the mean of its divisors is an integer number (3257265000).

Almost surely, 2^12942199451 is an apocalyptic number.

12942199451 is a deficient number, since it is larger than the sum of its proper divisors (86860549).

12942199451 is an equidigital number, since it uses as much as digits as its factorization.

12942199451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86860548.

The product of its digits is 233280, while the sum is 47.

The spelling of 12942199451 in words is "twelve billion, nine hundred forty-two million, one hundred ninety-nine thousand, four hundred fifty-one".