222140809 has 4 divisors (see below), whose sum is σ = 242335440. Its totient is φ = 201946180.

The previous prime is 222140803. The next prime is 222140813. The reversal of 222140809 is 908041222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222140809 - 2⁹ = 222140297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222140803) 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, 10097299 + ... + 10097320.

It is an arithmetic number, because the mean of its divisors is an integer number (60583860).

Almost surely, 2^222140809 is an apocalyptic number.

It is an amenable number.

222140809 is a deficient number, since it is larger than the sum of its proper divisors (20194631).

222140809 is a wasteful number, since it uses less digits than its factorization.

222140809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20194630.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 222140809 is about 14904.3889173626. The cubic root of 222140809 is about 605.6328864212.

The spelling of 222140809 in words is "two hundred twenty-two million, one hundred forty thousand, eight hundred nine".