18020011222 has 16 divisors (see below), whose sum is σ = 27093319344. Its totient is φ = 8988928000.

The previous prime is 18020011211. The next prime is 18020011249. The reversal of 18020011222 is 22211002081.

It is a self number, because there is not a number n which added to its sum of digits gives 18020011222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893897 + ... + 1903387.

It is an arithmetic number, because the mean of its divisors is an integer number (1693332459).

Almost surely, 2^18020011222 is an apocalyptic number.

18020011222 is a deficient number, since it is larger than the sum of its proper divisors (9073308122).

18020011222 is a wasteful number, since it uses less digits than its factorization.

18020011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11615.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 18020011222 in words is "eighteen billion, twenty million, eleven thousand, two hundred twenty-two".