2122201121021 has 2 divisors, whose sum is σ = 2122201121022. Its totient is φ = 2122201121020.

The previous prime is 2122201120997. The next prime is 2122201121039. The reversal of 2122201121021 is 1201211022212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2003317528996 + 118883592025 = 1415386^2 + 344795^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122201121021 - 2⁶ = 2122201120957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2122201121041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061100560510 + 1061100560511.

It is an arithmetic number, because the mean of its divisors is an integer number (1061100560511).

Almost surely, 2^{2122201121021} is an apocalyptic number.

It is an amenable number.

2122201121021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122201121021 is an equidigital number, since it uses as much as digits as its factorization.

2122201121021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2122201121021 its reverse (1201211022212), we get a palindrome (3323412143233).

The spelling of 2122201121021 in words is "two trillion, one hundred twenty-two billion, two hundred one million, one hundred twenty-one thousand, twenty-one".