12221325213402 has 64 divisors (see below), whose sum is σ = 24834936499200. Its totient is φ = 4008531542400.

The previous prime is 12221325213379. The next prime is 12221325213407. The reversal of 12221325213402 is 20431252312221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221325213402.

It is not an unprimeable number, because it can be changed into a prime (12221325213407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2106758902 + ... + 2106764702.

It is an arithmetic number, because the mean of its divisors is an integer number (388045882800).

Almost surely, 2^{12221325213402} is an apocalyptic number.

12221325213402 is an abundant number, since it is smaller than the sum of its proper divisors (12613611285798).

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

12221325213402 is a wasteful number, since it uses less digits than its factorization.

12221325213402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12221325213402 its reverse (20431252312221), we get a palindrome (32652577525623).

The spelling of 12221325213402 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty-five million, two hundred thirteen thousand, four hundred two".