12221285396 has 6 divisors (see below), whose sum is σ = 21387249450. Its totient is φ = 6110642696.

The previous prime is 12221285389. The next prime is 12221285399. The reversal of 12221285396 is 69358212221.

It can be written as a sum of positive squares in only one way, i.e., 10310371600 + 1910913796 = 101540^2 + 43714^2 .

It is a super-3 number, since 3×12221285396³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221285399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527660671 + ... + 1527660678.

It is an arithmetic number, because the mean of its divisors is an integer number (3564541575).

Almost surely, 2^12221285396 is an apocalyptic number.

It is an amenable number.

12221285396 is a deficient number, since it is larger than the sum of its proper divisors (9165964054).

12221285396 is a wasteful number, since it uses less digits than its factorization.

12221285396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055321353 (or 3055321351 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The spelling of 12221285396 in words is "twelve billion, two hundred twenty-one million, two hundred eighty-five thousand, three hundred ninety-six".