22161112397 has 4 divisors (see below), whose sum is σ = 22163123040. Its totient is φ = 22159101756.

The previous prime is 22161112387. The next prime is 22161112409. The reversal of 22161112397 is 79321116122.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22161112397 is a prime.

It is a super-2 number, since 2×22161112397² (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 (22161112367) 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, 988697 + ... + 1010862.

It is an arithmetic number, because the mean of its divisors is an integer number (5540780760).

Almost surely, 2^22161112397 is an apocalyptic number.

It is an amenable number.

22161112397 is a deficient number, since it is larger than the sum of its proper divisors (2010643).

22161112397 is a wasteful number, since it uses less digits than its factorization.

22161112397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010642.

The product of its digits is 9072, while the sum is 35.

The spelling of 22161112397 in words is "twenty-two billion, one hundred sixty-one million, one hundred twelve thousand, three hundred ninety-seven".