222209505 has 24 divisors (see below), whose sum is σ = 440187072. Its totient is φ = 101581344.

The previous prime is 222209497. The next prime is 222209521. The reversal of 222209505 is 505902222.

It is not a de Polignac number, because 222209505 - 2³ = 222209497 is a prime.

It is a super-2 number, since 2×222209505² = 98754128224690050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352399 + ... + 353028.

It is an arithmetic number, because the mean of its divisors is an integer number (18341128).

Almost surely, 2^222209505 is an apocalyptic number.

It is an amenable number.

222209505 is a deficient number, since it is larger than the sum of its proper divisors (217977567).

222209505 is a wasteful number, since it uses less digits than its factorization.

222209505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705445 (or 705442 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 222209505 is about 14906.6932952952. The cubic root of 222209505 is about 605.6953096938.

The spelling of 222209505 in words is "two hundred twenty-two million, two hundred nine thousand, five hundred five".