2153221912 has 16 divisors (see below), whose sum is σ = 4212825840. Its totient is φ = 1029801696.

The previous prime is 2153221909. The next prime is 2153221991. The reversal of 2153221912 is 2191223512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5850963 + ... + 5851330.

It is an arithmetic number, because the mean of its divisors is an integer number (263301615).

Almost surely, 2^2153221912 is an apocalyptic number.

It is an amenable number.

2153221912 is a deficient number, since it is larger than the sum of its proper divisors (2059603928).

2153221912 is a wasteful number, since it uses less digits than its factorization.

2153221912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11702322 (or 11702318 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 2153221912 is about 46402.8222417559. The cubic root of 2153221912 is about 1291.3072724168.

The spelling of 2153221912 in words is "two billion, one hundred fifty-three million, two hundred twenty-one thousand, nine hundred twelve".