22220065671 has 4 divisors (see below), whose sum is σ = 29626754232. Its totient is φ = 14813377112.

The previous prime is 22220065667. The next prime is 22220065687. The reversal of 22220065671 is 17656002222.

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

It is a cyclic number.

It is not a de Polignac number, because 22220065671 - 2² = 22220065667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220065601) 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, 3703344276 + ... + 3703344281.

It is an arithmetic number, because the mean of its divisors is an integer number (7406688558).

Almost surely, 2^22220065671 is an apocalyptic number.

22220065671 is a deficient number, since it is larger than the sum of its proper divisors (7406688561).

22220065671 is an equidigital number, since it uses as much as digits as its factorization.

22220065671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406688560.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 22220065671 its reverse (17656002222), we get a palindrome (39876067893).

The spelling of 22220065671 in words is "twenty-two billion, two hundred twenty million, sixty-five thousand, six hundred seventy-one".