2120888261 has 8 divisors (see below), whose sum is σ = 2246175360. Its totient is φ = 1995659968.

The previous prime is 2120888239. The next prime is 2120888323. The reversal of 2120888261 is 1628880212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120888261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120888461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75380 + ... + 99618.

It is an arithmetic number, because the mean of its divisors is an integer number (280771920).

Almost surely, 2^2120888261 is an apocalyptic number.

It is an amenable number.

2120888261 is a deficient number, since it is larger than the sum of its proper divisors (125287099).

2120888261 is a wasteful number, since it uses less digits than its factorization.

2120888261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29403.

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 2120888261 is about 46053.1026207790. The cubic root of 2120888261 is about 1284.8110490441.

The spelling of 2120888261 in words is "two billion, one hundred twenty million, eight hundred eighty-eight thousand, two hundred sixty-one".