12221362836 has 48 divisors (see below), whose sum is σ = 31916330880. Its totient is φ = 4044047040.

The previous prime is 12221362831. The next prime is 12221362843. The reversal of 12221362836 is 63826312221.

12221362836 is a `hidden beast` number, since 1 + 2 + 2 + 21 + 3 + 628 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12221362836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221362831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398200 + ... + 427791.

It is an arithmetic number, because the mean of its divisors is an integer number (664923560).

Almost surely, 2^12221362836 is an apocalyptic number.

It is an amenable number.

12221362836 is an abundant number, since it is smaller than the sum of its proper divisors (19694968044).

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

12221362836 is a wasteful number, since it uses less digits than its factorization.

12221362836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826141 (or 826133 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 12221362836 in words is "twelve billion, two hundred twenty-one million, three hundred sixty-two thousand, eight hundred thirty-six".