2191119221 has 8 divisors (see below), whose sum is σ = 2201743104. Its totient is φ = 2180508480.

The previous prime is 2191119209. The next prime is 2191119251. The reversal of 2191119221 is 1229111912.

2191119221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2191119221 - 2¹⁸ = 2190857077 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 (2191119251) 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, 528860 + ... + 532986.

It is an arithmetic number, because the mean of its divisors is an integer number (275217888).

Almost surely, 2^2191119221 is an apocalyptic number.

It is an amenable number.

2191119221 is a deficient number, since it is larger than the sum of its proper divisors (10623883).

2191119221 is a wasteful number, since it uses less digits than its factorization.

2191119221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571.

The product of its digits is 648, while the sum is 29.

The square root of 2191119221 is about 46809.3924442520. The cubic root of 2191119221 is about 1298.8390465670.

The spelling of 2191119221 in words is "two billion, one hundred ninety-one million, one hundred nineteen thousand, two hundred twenty-one".