2121120122120 has 16 divisors (see below), whose sum is σ = 4772520274860. Its totient is φ = 848448048832.

The previous prime is 2121120122111. The next prime is 2121120122123. The reversal of 2121120122120 is 212210211212.

It can be written as a sum of positive squares in 2 ways, for example, as 2024365531204 + 96754590916 = 1422802^2 + 311054^2 .

It is not an unprimeable number, because it can be changed into a prime (2121120122123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26514001487 + ... + 26514001566.

Almost surely, 2^{2121120122120} is an apocalyptic number.

2121120122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121120122120 is an abundant number, since it is smaller than the sum of its proper divisors (2651400152740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121120122120 is a wasteful number, since it uses less digits than its factorization.

2121120122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53028003064 (or 53028003060 counting only the distinct ones).

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

Adding to 2121120122120 its reverse (212210211212), we get a palindrome (2333330333332).

The spelling of 2121120122120 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty".