2122120120121 has 2 divisors, whose sum is σ = 2122120120122. Its totient is φ = 2122120120120.

The previous prime is 2122120120069. The next prime is 2122120120171. The reversal of 2122120120121 is 1210210212212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1113371066896 + 1008749053225 = 1055164^2 + 1004365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122120120121 - 2²² = 2122115925817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122120120121.

It is not a weakly prime, because it can be changed into another prime (2122120120171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061060060060 + 1061060060061.

It is an arithmetic number, because the mean of its divisors is an integer number (1061060060061).

Almost surely, 2^{2122120120121} is an apocalyptic number.

It is an amenable number.

2122120120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122120120121 is an equidigital number, since it uses as much as digits as its factorization.

2122120120121 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 2122120120121 its reverse (1210210212212), we get a palindrome (3332330332333).

The spelling of 2122120120121 in words is "two trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-one".