22161711171 has 4 divisors (see below), whose sum is σ = 29548948232. Its totient is φ = 14774474112.

The previous prime is 22161711127. The next prime is 22161711191. The reversal of 22161711171 is 17111716122.

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

It is not a de Polignac number, because 22161711171 - 2⁶ = 22161711107 is a prime.

It is a super-2 number, since 2×22161711171² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22161711191) 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, 3693618526 + ... + 3693618531.

It is an arithmetic number, because the mean of its divisors is an integer number (7387237058).

Almost surely, 2^22161711171 is an apocalyptic number.

22161711171 is a deficient number, since it is larger than the sum of its proper divisors (7387237061).

22161711171 is an equidigital number, since it uses as much as digits as its factorization.

22161711171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387237060.

The product of its digits is 1176, while the sum is 30.

The spelling of 22161711171 in words is "twenty-two billion, one hundred sixty-one million, seven hundred eleven thousand, one hundred seventy-one".