2154104121 has 16 divisors (see below), whose sum is σ = 3094350336. Its totient is φ = 1325054976.

The previous prime is 2154104089. The next prime is 2154104159. The reversal of 2154104121 is 1214014512.

It is not a de Polignac number, because 2154104121 - 2⁵ = 2154104089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154104191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97336 + ... + 117398.

It is an arithmetic number, because the mean of its divisors is an integer number (193396896).

Almost surely, 2^2154104121 is an apocalyptic number.

It is an amenable number.

2154104121 is a deficient number, since it is larger than the sum of its proper divisors (940246215).

2154104121 is a wasteful number, since it uses less digits than its factorization.

2154104121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22832.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2154104121 is about 46412.3272525737. The cubic root of 2154104121 is about 1291.4836046600.

Adding to 2154104121 its reverse (1214014512), we get a palindrome (3368118633).

The spelling of 2154104121 in words is "two billion, one hundred fifty-four million, one hundred four thousand, one hundred twenty-one".