22194191001 has 4 divisors (see below), whose sum is σ = 29592254672. Its totient is φ = 14796127332.

The previous prime is 22194190987. The next prime is 22194191009. The reversal of 22194191001 is 10019149122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22194191001 - 2⁷ = 22194190873 is a prime.

It is a super-2 number, since 2×22194191001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22194191001.

It is not an unprimeable number, because it can be changed into a prime (22194191009) 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, 3699031831 + ... + 3699031836.

It is an arithmetic number, because the mean of its divisors is an integer number (7398063668).

Almost surely, 2^22194191001 is an apocalyptic number.

It is an amenable number.

22194191001 is a deficient number, since it is larger than the sum of its proper divisors (7398063671).

22194191001 is an equidigital number, since it uses as much as digits as its factorization.

22194191001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398063670.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 22194191001 in words is "twenty-two billion, one hundred ninety-four million, one hundred ninety-one thousand, one".