2128099501 has 16 divisors (see below), whose sum is σ = 2413997568. Its totient is φ = 1858521600.

The previous prime is 2128099459. The next prime is 2128099517. The reversal of 2128099501 is 1059908212.

It is a cyclic number.

It is not a de Polignac number, because 2128099501 - 2¹³ = 2128091309 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 (2128099201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23941 + ... + 69493.

It is an arithmetic number, because the mean of its divisors is an integer number (150874848).

Almost surely, 2^2128099501 is an apocalyptic number.

It is an amenable number.

2128099501 is a deficient number, since it is larger than the sum of its proper divisors (285898067).

2128099501 is a wasteful number, since it uses less digits than its factorization.

2128099501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45732.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 2128099501 is about 46131.3288449401. The cubic root of 2128099501 is about 1286.2655653813.

The spelling of 2128099501 in words is "two billion, one hundred twenty-eight million, ninety-nine thousand, five hundred one".