12290056123 has 4 divisors (see below), whose sum is σ = 12622219840. Its totient is φ = 11957892408.

The previous prime is 12290056061. The next prime is 12290056139. The reversal of 12290056123 is 32165009221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12290056123 is a prime.

It is a super-2 number, since 2×12290056123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12290054123) 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, 166081803 + ... + 166081876.

It is an arithmetic number, because the mean of its divisors is an integer number (3155554960).

Almost surely, 2^12290056123 is an apocalyptic number.

12290056123 is a deficient number, since it is larger than the sum of its proper divisors (332163717).

12290056123 is an equidigital number, since it uses as much as digits as its factorization.

12290056123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332163716.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 12290056123 in words is "twelve billion, two hundred ninety million, fifty-six thousand, one hundred twenty-three".