12223312121021 has 8 divisors (see below), whose sum is σ = 12240563278944. Its totient is φ = 12206063877840.

The previous prime is 12223312121017. The next prime is 12223312121023. The reversal of 12223312121021 is 12012121332221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12223312121021 - 2² = 12223312121017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223312121023) 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, 7733726 + ... + 9179168.

It is an arithmetic number, because the mean of its divisors is an integer number (1530070409868).

Almost surely, 2^{12223312121021} is an apocalyptic number.

It is an amenable number.

12223312121021 is a deficient number, since it is larger than the sum of its proper divisors (17251157923).

12223312121021 is a wasteful number, since it uses less digits than its factorization.

12223312121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457371.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12223312121021 its reverse (12012121332221), we get a palindrome (24235433453242).

The spelling of 12223312121021 in words is "twelve trillion, two hundred twenty-three billion, three hundred twelve million, one hundred twenty-one thousand, twenty-one".