2108775421 has 8 divisors (see below), whose sum is σ = 2235435840. Its totient is φ = 1982405568.

The previous prime is 2108775413. The next prime is 2108775451. The reversal of 2108775421 is 1245778012.

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

It is a cyclic number.

It is not a de Polignac number, because 2108775421 - 2³ = 2108775413 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 (2108775451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57601 + ... + 86806.

It is an arithmetic number, because the mean of its divisors is an integer number (279429480).

Almost surely, 2^2108775421 is an apocalyptic number.

It is an amenable number.

2108775421 is a deficient number, since it is larger than the sum of its proper divisors (126660419).

2108775421 is a wasteful number, since it uses less digits than its factorization.

2108775421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145283.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 2108775421 is about 45921.4048238945. The cubic root of 2108775421 is about 1282.3604355245.

The spelling of 2108775421 in words is "two billion, one hundred eight million, seven hundred seventy-five thousand, four hundred twenty-one".