2123206015 has 64 divisors (see below), whose sum is σ = 3264768000. Its totient is φ = 1318851072.

The previous prime is 2123206003. The next prime is 2123206031. The reversal of 2123206015 is 5106023212.

It is not a de Polignac number, because 2123206015 - 2⁹ = 2123205503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 748039 + ... + 750871.

It is an arithmetic number, because the mean of its divisors is an integer number (51012000).

Almost surely, 2^2123206015 is an apocalyptic number.

2123206015 is a deficient number, since it is larger than the sum of its proper divisors (1141561985).

2123206015 is a wasteful number, since it uses less digits than its factorization.

2123206015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2901 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2123206015 is about 46078.2596785078. The cubic root of 2123206015 is about 1285.2789020499.

Adding to 2123206015 its reverse (5106023212), we get a palindrome (7229229227).

The spelling of 2123206015 in words is "two billion, one hundred twenty-three million, two hundred six thousand, fifteen".