2120120020121 has 16 divisors (see below), whose sum is σ = 2256501485568. Its totient is φ = 1988716438800.

The previous prime is 2120120020099. The next prime is 2120120020141. The reversal of 2120120020121 is 1210200210212.

It is a cyclic number.

It is not a de Polignac number, because 2120120020121 - 2²⁶ = 2120052911257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120120020096 and 2120120020105.

It is not an unprimeable number, because it can be changed into a prime (2120120020141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5895941 + ... + 6245186.

It is an arithmetic number, because the mean of its divisors is an integer number (141031342848).

Almost surely, 2^{2120120020121} is an apocalyptic number.

It is an amenable number.

2120120020121 is a deficient number, since it is larger than the sum of its proper divisors (136381465447).

2120120020121 is a wasteful number, since it uses less digits than its factorization.

2120120020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141332.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120120020121 its reverse (1210200210212), we get a palindrome (3330320230333).

The spelling of 2120120020121 in words is "two trillion, one hundred twenty billion, one hundred twenty million, twenty thousand, one hundred twenty-one".