12221705677764 has 48 divisors (see below), whose sum is σ = 31257236134656. Its totient is φ = 3685994810400.

The previous prime is 12221705677739. The next prime is 12221705677789. The reversal of 12221705677764 is 46777650712221.

It is an interprime number because it is at equal distance from previous prime (12221705677739) and next prime (12221705677789).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219376602 + ... + 219432305.

It is an arithmetic number, because the mean of its divisors is an integer number (651192419472).

Almost surely, 2^{12221705677764} is an apocalyptic number.

It is an amenable number.

12221705677764 is an abundant number, since it is smaller than the sum of its proper divisors (19035530456892).

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

12221705677764 is a wasteful number, since it uses less digits than its factorization.

12221705677764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438809136 (or 438809134 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 57.

The spelling of 12221705677764 in words is "twelve trillion, two hundred twenty-one billion, seven hundred five million, six hundred seventy-seven thousand, seven hundred sixty-four".