12117722426 has 8 divisors (see below), whose sum is σ = 18186324960. Its totient is φ = 6055614108.

The previous prime is 12117722387. The next prime is 12117722479. The reversal of 12117722426 is 62422771121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 1618886 + ... + 1626353.

It is an arithmetic number, because the mean of its divisors is an integer number (2273290620).

Almost surely, 2^12117722426 is an apocalyptic number.

12117722426 is a deficient number, since it is larger than the sum of its proper divisors (6068602534).

12117722426 is a wasteful number, since it uses less digits than its factorization.

12117722426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247108.

The product of its digits is 18816, while the sum is 35.

The spelling of 12117722426 in words is "twelve billion, one hundred seventeen million, seven hundred twenty-two thousand, four hundred twenty-six".