222109505 has 48 divisors (see below), whose sum is σ = 304504704. Its totient is φ = 155105280.

The previous prime is 222109477. The next prime is 222109543. The reversal of 222109505 is 505901222.

It is not a de Polignac number, because 222109505 - 2⁸ = 222109249 is a prime.

It is a super-2 number, since 2×222109505² = 98665264422690050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1362554 + ... + 1362716.

It is an arithmetic number, because the mean of its divisors is an integer number (6343848).

Almost surely, 2^222109505 is an apocalyptic number.

It is an amenable number.

222109505 is a deficient number, since it is larger than the sum of its proper divisors (82395199).

222109505 is a wasteful number, since it uses less digits than its factorization.

222109505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 222109505 is about 14903.3387198976. The cubic root of 222109505 is about 605.6044365645.

The spelling of 222109505 in words is "two hundred twenty-two million, one hundred nine thousand, five hundred five".