222166403 has 4 divisors (see below), whose sum is σ = 222807000. Its totient is φ = 221525808.

The previous prime is 222166397. The next prime is 222166433. The reversal of 222166403 is 304661222.

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 222166403 - 2¹⁰ = 222165379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222166433) 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, 319778 + ... + 320471.

It is an arithmetic number, because the mean of its divisors is an integer number (55701750).

Almost surely, 2^222166403 is an apocalyptic number.

222166403 is a deficient number, since it is larger than the sum of its proper divisors (640597).

222166403 is an equidigital number, since it uses as much as digits as its factorization.

222166403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640596.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 222166403 is about 14905.2474987838. The cubic root of 222166403 is about 605.6561449014.

The spelling of 222166403 in words is "two hundred twenty-two million, one hundred sixty-six thousand, four hundred three".