12211914833391 has 256 divisors, whose sum is σ = 21374423662592. Its totient is φ = 6036775050240.

The previous prime is 12211914833347. The next prime is 12211914833399. The reversal of 12211914833391 is 19333841911221.

It is a de Polignac number, because none of the positive numbers 2^k-12211914833391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12211914833391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211914833399) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 39778224060 + ... + 39778224366.

It is an arithmetic number, because the mean of its divisors is an integer number (83493842432).

Almost surely, 2^{12211914833391} is an apocalyptic number.

12211914833391 is a deficient number, since it is larger than the sum of its proper divisors (9162508829201).

12211914833391 is an equidigital number, since it uses as much as digits as its factorization.

12211914833391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 501 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The spelling of 12211914833391 in words is "twelve trillion, two hundred eleven billion, nine hundred fourteen million, eight hundred thirty-three thousand, three hundred ninety-one".