20185802122 has 32 divisors (see below), whose sum is σ = 32135140800. Its totient is φ = 9482997888.

The previous prime is 20185802113. The next prime is 20185802149. The reversal of 20185802122 is 22120858102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8434158 + ... + 8436550.

It is an arithmetic number, because the mean of its divisors is an integer number (1004223150).

Almost surely, 2^20185802122 is an apocalyptic number.

20185802122 is a deficient number, since it is larger than the sum of its proper divisors (11949338678).

20185802122 is a wasteful number, since it uses less digits than its factorization.

20185802122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150.

The product of its (nonzero) digits is 5120, while the sum is 31.

The spelling of 20185802122 in words is "twenty billion, one hundred eighty-five million, eight hundred two thousand, one hundred twenty-two".