12221120012252 has 24 divisors (see below), whose sum is σ = 21468441430800. Its totient is φ = 6087283786496.

The previous prime is 12221120012251. The next prime is 12221120012261. The reversal of 12221120012252 is 25221002112221.

It is a super-2 number, since 2×12221120012252² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221120012251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11296148 + ... + 12330660.

It is an arithmetic number, because the mean of its divisors is an integer number (894518392950).

Almost surely, 2^{12221120012252} is an apocalyptic number.

It is an amenable number.

12221120012252 is a deficient number, since it is larger than the sum of its proper divisors (9247321418548).

12221120012252 is a wasteful number, since it uses less digits than its factorization.

12221120012252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045765 (or 1045763 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 12221120012252 its reverse (25221002112221), we get a palindrome (37442122124473).

The spelling of 12221120012252 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, twelve thousand, two hundred fifty-two".