12217188790 has 16 divisors (see below), whose sum is σ = 21999876768. Its totient is φ = 4884889536.

The previous prime is 12217188787. The next prime is 12217188793. The reversal of 12217188790 is 9788171221.

It is an interprime number because it is at equal distance from previous prime (12217188787) and next prime (12217188793).

It is a self number, because there is not a number n which added to its sum of digits gives 12217188790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12217188793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222282 + ... + 271741.

It is an arithmetic number, because the mean of its divisors is an integer number (1374992298).

Almost surely, 2^12217188790 is an apocalyptic number.

12217188790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12217188790 is a deficient number, since it is larger than the sum of its proper divisors (9782687978).

12217188790 is a wasteful number, since it uses less digits than its factorization.

12217188790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496503.

The product of its (nonzero) digits is 112896, while the sum is 46.

The spelling of 12217188790 in words is "twelve billion, two hundred seventeen million, one hundred eighty-eight thousand, seven hundred ninety".