22172171461 has 4 divisors (see below), whose sum is σ = 24187823424. Its totient is φ = 20156519500.

The previous prime is 22172171431. The next prime is 22172171519. The reversal of 22172171461 is 16417127122.

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 not a de Polignac number, because 22172171461 - 2⁹ = 22172170949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172171431) 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, 1007825965 + ... + 1007825986.

It is an arithmetic number, because the mean of its divisors is an integer number (6046955856).

Almost surely, 2^22172171461 is an apocalyptic number.

It is an amenable number.

22172171461 is a deficient number, since it is larger than the sum of its proper divisors (2015651963).

22172171461 is a wasteful number, since it uses less digits than its factorization.

22172171461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015651962.

The product of its digits is 9408, while the sum is 34.

Adding to 22172171461 its reverse (16417127122), we get a palindrome (38589298583).

The spelling of 22172171461 in words is "twenty-two billion, one hundred seventy-two million, one hundred seventy-one thousand, four hundred sixty-one".