2120354121 has 16 divisors (see below), whose sum is σ = 2995553664. Its totient is φ = 1329479424.

The previous prime is 2120354113. The next prime is 2120354141. The reversal of 2120354121 is 1214530212.

It is not a de Polignac number, because 2120354121 - 2³ = 2120354113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2120354141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62220 + ... + 90066.

It is an arithmetic number, because the mean of its divisors is an integer number (187222104).

Almost surely, 2^2120354121 is an apocalyptic number.

It is an amenable number.

2120354121 is a deficient number, since it is larger than the sum of its proper divisors (875199543).

2120354121 is a wasteful number, since it uses less digits than its factorization.

2120354121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29360.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2120354121 is about 46047.3030806365. The cubic root of 2120354121 is about 1284.7031812534.

Adding to 2120354121 its reverse (1214530212), we get a palindrome (3334884333).

The spelling of 2120354121 in words is "two billion, one hundred twenty million, three hundred fifty-four thousand, one hundred twenty-one".