20185660222 has 32 divisors (see below), whose sum is σ = 37634837184. Its totient is φ = 7906464000.

The previous prime is 20185660123. The next prime is 20185660247. The reversal of 20185660222 is 22206658102.

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 15 ways as a sum of consecutive naturals, for example, 530679 + ... + 567442.

It is an arithmetic number, because the mean of its divisors is an integer number (1176088662).

Almost surely, 2^20185660222 is an apocalyptic number.

20185660222 is a deficient number, since it is larger than the sum of its proper divisors (17449176962).

20185660222 is a wasteful number, since it uses less digits than its factorization.

20185660222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098244.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 20185660222 in words is "twenty billion, one hundred eighty-five million, six hundred sixty thousand, two hundred twenty-two".