12271831836 has 48 divisors (see below), whose sum is σ = 31308052608. Its totient is φ = 3710324800.

The previous prime is 12271831813. The next prime is 12271831849. The reversal of 12271831836 is 63813817221.

It is a super-2 number, since 2×12271831836² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 46455 + ... + 163406.

It is an arithmetic number, because the mean of its divisors is an integer number (652251096).

Almost surely, 2^12271831836 is an apocalyptic number.

It is an amenable number.

12271831836 is an abundant number, since it is smaller than the sum of its proper divisors (19036220772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12271831836 is a wasteful number, since it uses less digits than its factorization.

12271831836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210322 (or 210320 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The spelling of 12271831836 in words is "twelve billion, two hundred seventy-one million, eight hundred thirty-one thousand, eight hundred thirty-six".