22102257191 has 4 divisors (see below), whose sum is σ = 25259722512. Its totient is φ = 18944791872.

The previous prime is 22102257179. The next prime is 22102257193. The reversal of 22102257191 is 19175220122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19175220122 = 2 ⋅9587610061.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22102257191 is a prime.

It is a super-2 number, since 2×22102257191² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102257193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578732650 + ... + 1578732663.

It is an arithmetic number, because the mean of its divisors is an integer number (6314930628).

Almost surely, 2^22102257191 is an apocalyptic number.

22102257191 is a deficient number, since it is larger than the sum of its proper divisors (3157465321).

22102257191 is an equidigital number, since it uses as much as digits as its factorization.

22102257191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157465320.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 22102257191 in words is "twenty-two billion, one hundred two million, two hundred fifty-seven thousand, one hundred ninety-one".