2191272204 has 96 divisors (see below), whose sum is σ = 5937926400. Its totient is φ = 621941760.

The previous prime is 2191272197. The next prime is 2191272221. The reversal of 2191272204 is 4022721912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218304 + ... + 228120.

It is an arithmetic number, because the mean of its divisors is an integer number (61853400).

Almost surely, 2^2191272204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2191272204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2968963200).

2191272204 is an abundant number, since it is smaller than the sum of its proper divisors (3746654196).

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

2191272204 is a wasteful number, since it uses less digits than its factorization.

2191272204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943 (or 9941 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2191272204 is about 46811.0265215366. The cubic root of 2191272204 is about 1298.8692739910.

The spelling of 2191272204 in words is "two billion, one hundred ninety-one million, two hundred seventy-two thousand, two hundred four".