22000221191 has 4 divisors (see below), whose sum is σ = 23692545912. Its totient is φ = 20307896472.

The previous prime is 22000221157. The next prime is 22000221223. The reversal of 22000221191 is 19112200022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000221191 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 (22000221491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846162341 + ... + 846162366.

It is an arithmetic number, because the mean of its divisors is an integer number (5923136478).

Almost surely, 2^22000221191 is an apocalyptic number.

22000221191 is a deficient number, since it is larger than the sum of its proper divisors (1692324721).

22000221191 is a wasteful number, since it uses less digits than its factorization.

22000221191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692324720.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 22000221191 in words is "twenty-two billion, two hundred twenty-one thousand, one hundred ninety-one".