2120332129121 has 2 divisors, whose sum is σ = 2120332129122. Its totient is φ = 2120332129120.

The previous prime is 2120332129109. The next prime is 2120332129141. The reversal of 2120332129121 is 1219212330212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1579093824400 + 541238304721 = 1256620^2 + 735689^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120332129121 - 2¹⁰ = 2120332128097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120332129141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060166064560 + 1060166064561.

It is an arithmetic number, because the mean of its divisors is an integer number (1060166064561).

Almost surely, 2^{2120332129121} is an apocalyptic number.

It is an amenable number.

2120332129121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120332129121 is an equidigital number, since it uses as much as digits as its factorization.

2120332129121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 2120332129121 its reverse (1219212330212), we get a palindrome (3339544459333).

The spelling of 2120332129121 in words is "two trillion, one hundred twenty billion, three hundred thirty-two million, one hundred twenty-nine thousand, one hundred twenty-one".