18901000220222 has 16 divisors (see below), whose sum is σ = 30138834205872. Its totient is φ = 8859151728000.

The previous prime is 18901000220203. The next prime is 18901000220237. The reversal of 18901000220222 is 22202200010981.

It is a happy number.

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, 1107385433 + ... + 1107402500.

It is an arithmetic number, because the mean of its divisors is an integer number (1883677137867).

Almost surely, 2^{18901000220222} is an apocalyptic number.

18901000220222 is a deficient number, since it is larger than the sum of its proper divisors (11237833985650).

18901000220222 is a wasteful number, since it uses less digits than its factorization.

18901000220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214788203.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 18901000220222 in words is "eighteen trillion, nine hundred one billion, two hundred twenty thousand, two hundred twenty-two".