2271661100 has 36 divisors (see below), whose sum is σ = 4936147608. Its totient is φ = 907440000.

The previous prime is 2271661099. The next prime is 2271661111. The reversal of 2271661100 is 11661722.

It is a self number, because there is not a number n which added to its sum of digits gives 2271661100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61175 + ... + 91025.

Almost surely, 2^2271661100 is an apocalyptic number.

2271661100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2271661100 is an abundant number, since it is smaller than the sum of its proper divisors (2664486508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2271661100 is a wasteful number, since it uses less digits than its factorization.

2271661100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30626 (or 30619 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 2271661100 is about 47661.9460366444. The cubic root of 2271661100 is about 1314.5623221139.

The spelling of 2271661100 in words is "two billion, two hundred seventy-one million, six hundred sixty-one thousand, one hundred".