18223201238822 has 4 divisors (see below), whose sum is σ = 27334801858236. Its totient is φ = 9111600619410.

The previous prime is 18223201238819. The next prime is 18223201238839. The reversal of 18223201238822 is 22883210232281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4555800309704 + ... + 4555800309707.

It is an arithmetic number, because the mean of its divisors is an integer number (6833700464559).

Almost surely, 2^{18223201238822} is an apocalyptic number.

18223201238822 is a deficient number, since it is larger than the sum of its proper divisors (9111600619414).

18223201238822 is an equidigital number, since it uses as much as digits as its factorization.

18223201238822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9111600619413.

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 18223201238822 in words is "eighteen trillion, two hundred twenty-three billion, two hundred one million, two hundred thirty-eight thousand, eight hundred twenty-two".