2123120444 has 12 divisors (see below), whose sum is σ = 3717428568. Its totient is φ = 1060998000.

The previous prime is 2123120437. The next prime is 2123120533. The reversal of 2123120444 is 4440213212.

It is a super-3 number, since 3×2123120444³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132002 + ... + 147209.

It is an arithmetic number, because the mean of its divisors is an integer number (309785714).

Almost surely, 2^2123120444 is an apocalyptic number.

It is an amenable number.

2123120444 is a deficient number, since it is larger than the sum of its proper divisors (1594308124).

2123120444 is a wasteful number, since it uses less digits than its factorization.

2123120444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281116 (or 281114 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2123120444 is about 46077.3311293091. The cubic root of 2123120444 is about 1285.2616350681.

Adding to 2123120444 its reverse (4440213212), we get a palindrome (6563333656).

The spelling of 2123120444 in words is "two billion, one hundred twenty-three million, one hundred twenty thousand, four hundred forty-four".