12221325767427 has 64 divisors (see below), whose sum is σ = 20685690316800. Its totient is φ = 6256782120960.

The previous prime is 12221325767407. The next prime is 12221325767479. The reversal of 12221325767427 is 72476752312221.

It is not a de Polignac number, because 12221325767427 - 2¹⁸ = 12221325505283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 12221325767427.

It is not an unprimeable number, because it can be changed into a prime (12221325767407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7578052 + ... + 9048177.

It is an arithmetic number, because the mean of its divisors is an integer number (323213911200).

Almost surely, 2^{12221325767427} is an apocalyptic number.

12221325767427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12221325767427 is a deficient number, since it is larger than the sum of its proper divisors (8464364549373).

12221325767427 is a wasteful number, since it uses less digits than its factorization.

12221325767427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16626356.

The product of its digits is 3951360, while the sum is 51.

The spelling of 12221325767427 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty-five million, seven hundred sixty-seven thousand, four hundred twenty-seven".