22222222166663 has 8 divisors (see below), whose sum is σ = 23353586087568. Its totient is φ = 21118793157504.

The previous prime is 22222222166609. The next prime is 22222222166699. The reversal of 22222222166663 is 36666122222222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222222166663 - 2⁴⁰ = 21122710538887 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 (22222222166363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6983726306 + ... + 6983729487.

It is an arithmetic number, because the mean of its divisors is an integer number (2919198260946).

Almost surely, 2^{22222222166663} is an apocalyptic number.

22222222166663 is a deficient number, since it is larger than the sum of its proper divisors (1131363920905).

22222222166663 is a wasteful number, since it uses less digits than its factorization.

22222222166663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13967455873.

The product of its digits is 995328, while the sum is 44.

Adding to 22222222166663 its reverse (36666122222222), we get a palindrome (58888344388885).

The spelling of 22222222166663 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred sixty-six thousand, six hundred sixty-three".