12220012330021 has 2 divisors, whose sum is σ = 12220012330022. Its totient is φ = 12220012330020.

The previous prime is 12220012329971. The next prime is 12220012330069. The reversal of 12220012330021 is 12003321002221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12153688053796 + 66324276225 = 3486214^2 + 257535^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220012330021 - 2⁷ = 12220012329893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220012030021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110006165010 + 6110006165011.

It is an arithmetic number, because the mean of its divisors is an integer number (6110006165011).

Almost surely, 2^{12220012330021} is an apocalyptic number.

It is an amenable number.

12220012330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220012330021 is an equidigital number, since it uses as much as digits as its factorization.

12220012330021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12220012330021 its reverse (12003321002221), we get a palindrome (24223333332242).

The spelling of 12220012330021 in words is "twelve trillion, two hundred twenty billion, twelve million, three hundred thirty thousand, twenty-one".