12212919983 has 24 divisors (see below), whose sum is σ = 14237609568. Its totient is φ = 10445688000.

The previous prime is 12212919893. The next prime is 12212920033. The reversal of 12212919983 is 38991921221.

It is a happy number.

It is not a de Polignac number, because 12212919983 - 2²⁰ = 12211871407 is a prime.

It is a super-2 number, since 2×12212919983² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212919283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133793 + ... + 205733.

It is an arithmetic number, because the mean of its divisors is an integer number (593233732).

Almost surely, 2^12212919983 is an apocalyptic number.

12212919983 is a deficient number, since it is larger than the sum of its proper divisors (2024689585).

12212919983 is a wasteful number, since it uses less digits than its factorization.

12212919983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72047 (or 72036 counting only the distinct ones).

The product of its digits is 139968, while the sum is 47.

The spelling of 12212919983 in words is "twelve billion, two hundred twelve million, nine hundred nineteen thousand, nine hundred eighty-three".