12021122331021 has 8 divisors (see below), whose sum is σ = 16299826889760. Its totient is φ = 7878249663152.

The previous prime is 12021122331007. The next prime is 12021122331047. The reversal of 12021122331021 is 12013322112021.

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 12021122331021 - 2⁵ = 12021122330989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021122331091) 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, 33957972510 + ... + 33957972863.

It is an arithmetic number, because the mean of its divisors is an integer number (2037478361220).

Almost surely, 2^{12021122331021} is an apocalyptic number.

It is an amenable number.

12021122331021 is a deficient number, since it is larger than the sum of its proper divisors (4278704558739).

12021122331021 is an equidigital number, since it uses as much as digits as its factorization.

12021122331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67915945435.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12021122331021 its reverse (12013322112021), we get a palindrome (24034444443042).

The spelling of 12021122331021 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, three hundred thirty-one thousand, twenty-one".