2149121499 has 32 divisors (see below), whose sum is σ = 3311869440. Its totient is φ = 1214237952.

The previous prime is 2149121489. The next prime is 2149121503. The reversal of 2149121499 is 9941219412.

2149121499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2149121499 - 2⁸ = 2149121243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2149121499.

It is not an unprimeable number, because it can be changed into a prime (2149121479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1800847 + ... + 1802039.

It is an arithmetic number, because the mean of its divisors is an integer number (103495920).

Almost surely, 2^2149121499 is an apocalyptic number.

2149121499 is a deficient number, since it is larger than the sum of its proper divisors (1162747941).

2149121499 is a wasteful number, since it uses less digits than its factorization.

2149121499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099.

The product of its digits is 46656, while the sum is 42.

The square root of 2149121499 is about 46358.6183896803. The cubic root of 2149121499 is about 1290.4870662402.

The spelling of 2149121499 in words is "two billion, one hundred forty-nine million, one hundred twenty-one thousand, four hundred ninety-nine".