12212642217 has 16 divisors (see below), whose sum is σ = 17144421120. Its totient is φ = 7711506000.

The previous prime is 12212642213. The next prime is 12212642219. The reversal of 12212642217 is 71224621221.

It is not a de Polignac number, because 12212642217 - 2² = 12212642213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212642213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259342 + ... + 302792.

It is an arithmetic number, because the mean of its divisors is an integer number (1071526320).

Almost surely, 2^12212642217 is an apocalyptic number.

It is an amenable number.

12212642217 is a deficient number, since it is larger than the sum of its proper divisors (4931778903).

12212642217 is a wasteful number, since it uses less digits than its factorization.

12212642217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48404.

The product of its digits is 5376, while the sum is 30.

The spelling of 12212642217 in words is "twelve billion, two hundred twelve million, six hundred forty-two thousand, two hundred seventeen".