12221332323021 has 6 divisors (see below), whose sum is σ = 17653035577710. Its totient is φ = 8147554882008.

The previous prime is 12221332323017. The next prime is 12221332323023. The reversal of 12221332323021 is 12032323312221.

12221332323021 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 332 + 323 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11603465580996 + 617866742025 = 3406386^2 + 786045^2 .

It is not a de Polignac number, because 12221332323021 - 2² = 12221332323017 is a prime.

It is a super-3 number, since 3×12221332323021³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221332323023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678962906826 + ... + 678962906843.

It is an arithmetic number, because the mean of its divisors is an integer number (2942172596285).

Almost surely, 2^{12221332323021} is an apocalyptic number.

It is an amenable number.

12221332323021 is a deficient number, since it is larger than the sum of its proper divisors (5431703254689).

12221332323021 is a wasteful number, since it uses less digits than its factorization.

12221332323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357925813675 (or 1357925813672 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 12221332323021 its reverse (12032323312221), we get a palindrome (24253655635242).

The spelling of 12221332323021 in words is "twelve trillion, two hundred twenty-one billion, three hundred thirty-two million, three hundred twenty-three thousand, twenty-one".