22197412327 has 4 divisors (see below), whose sum is σ = 22197948040. Its totient is φ = 22196876616.

The previous prime is 22197412291. The next prime is 22197412339. The reversal of 22197412327 is 72321479122.

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-22197412327 is a prime.

It is a super-2 number, since 2×22197412327² (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 22197412327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22197452327) 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, 199968 + ... + 290485.

It is an arithmetic number, because the mean of its divisors is an integer number (5549487010).

Almost surely, 2^22197412327 is an apocalyptic number.

22197412327 is a deficient number, since it is larger than the sum of its proper divisors (535713).

22197412327 is an equidigital number, since it uses as much as digits as its factorization.

22197412327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535712.

The product of its digits is 84672, while the sum is 40.

The spelling of 22197412327 in words is "twenty-two billion, one hundred ninety-seven million, four hundred twelve thousand, three hundred twenty-seven".