22217166684 has 36 divisors (see below), whose sum is σ = 58096616760. Its totient is φ = 7150352160.

The previous prime is 22217166679. The next prime is 22217166691. The reversal of 22217166684 is 48666171222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10639362 + ... + 10641449.

It is an arithmetic number, because the mean of its divisors is an integer number (1613794910).

Almost surely, 2^22217166684 is an apocalyptic number.

It is an amenable number.

22217166684 is an abundant number, since it is smaller than the sum of its proper divisors (35879450076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22217166684 is a wasteful number, since it uses less digits than its factorization.

22217166684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21280850 (or 21280845 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 22217166684 in words is "twenty-two billion, two hundred seventeen million, one hundred sixty-six thousand, six hundred eighty-four".