12217606051 has 6 divisors (see below), whose sum is σ = 14212317300. Its totient is φ = 10472233716.

The previous prime is 12217606021. The next prime is 12217606067. The reversal of 12217606051 is 15060671221.

It is not a de Polignac number, because 12217606051 - 2⁷ = 12217605923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12217606001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124669401 + ... + 124669498.

It is an arithmetic number, because the mean of its divisors is an integer number (2368719550).

Almost surely, 2^12217606051 is an apocalyptic number.

12217606051 is a deficient number, since it is larger than the sum of its proper divisors (1994711249).

12217606051 is an equidigital number, since it uses as much as digits as its factorization.

12217606051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249338913 (or 249338906 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 12217606051 in words is "twelve billion, two hundred seventeen million, six hundred six thousand, fifty-one".