2123501149 has 16 divisors (see below), whose sum is σ = 2687003136. Its totient is φ = 1629975600.

The previous prime is 2123501141. The next prime is 2123501179. The reversal of 2123501149 is 9411053212.

It is not a de Polignac number, because 2123501149 - 2³ = 2123501141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123501141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200647 + ... + 210964.

It is an arithmetic number, because the mean of its divisors is an integer number (167937696).

Almost surely, 2^2123501149 is an apocalyptic number.

It is an amenable number.

2123501149 is a deficient number, since it is larger than the sum of its proper divisors (563501987).

2123501149 is a wasteful number, since it uses less digits than its factorization.

2123501149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411696.

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

The square root of 2123501149 is about 46081.4620970299. The cubic root of 2123501149 is about 1285.3384522342.

The spelling of 2123501149 in words is "two billion, one hundred twenty-three million, five hundred one thousand, one hundred forty-nine".