2191000822 has 8 divisors (see below), whose sum is σ = 3300979896. Its totient is φ = 1090674192.

The previous prime is 2191000787. The next prime is 2191000853. The reversal of 2191000822 is 2280001912.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2412543 + ... + 2413450.

It is an arithmetic number, because the mean of its divisors is an integer number (412622487).

Almost surely, 2^2191000822 is an apocalyptic number.

2191000822 is a deficient number, since it is larger than the sum of its proper divisors (1109979074).

2191000822 is a wasteful number, since it uses less digits than its factorization.

2191000822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826222.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2191000822 is about 46808.1277344010. The cubic root of 2191000822 is about 1298.8156515195.

The spelling of 2191000822 in words is "two billion, one hundred ninety-one million, eight hundred twenty-two", and thus it is an aban number.