2120110121 has 2 divisors, whose sum is σ = 2120110122. Its totient is φ = 2120110120.

The previous prime is 2120110099. The next prime is 2120110127. The reversal of 2120110121 is 1210110212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093228096 + 1026882025 = 33064^2 + 32045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120110121 - 2¹⁰ = 2120109097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120110127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060055060 + 1060055061.

It is an arithmetic number, because the mean of its divisors is an integer number (1060055061).

Almost surely, 2^2120110121 is an apocalyptic number.

It is an amenable number.

2120110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120110121 is an equidigital number, since it uses as much as digits as its factorization.

2120110121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2120110121 is about 46044.6535550003. The cubic root of 2120110121 is about 1284.6539002397.

Adding to 2120110121 its reverse (1210110212), we get a palindrome (3330220333).

Subtracting from 2120110121 its reverse (1210110212), we obtain a palindrome (909999909).

The spelling of 2120110121 in words is "two billion, one hundred twenty million, one hundred ten thousand, one hundred twenty-one".