222990637823 has 4 divisors (see below), whose sum is σ = 223418643408. Its totient is φ = 222562632240.

The previous prime is 222990637817. The next prime is 222990637867. The reversal of 222990637823 is 328736099222.

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

It is a cyclic number.

It is not a de Polignac number, because 222990637823 - 2⁸ = 222990637567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222990631823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214002011 + ... + 214003052.

It is an arithmetic number, because the mean of its divisors is an integer number (55854660852).

Almost surely, 2^222990637823 is an apocalyptic number.

222990637823 is a deficient number, since it is larger than the sum of its proper divisors (428005585).

222990637823 is an equidigital number, since it uses as much as digits as its factorization.

222990637823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428005584.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 222990637823 in words is "two hundred twenty-two billion, nine hundred ninety million, six hundred thirty-seven thousand, eight hundred twenty-three".