222146505 has 48 divisors (see below), whose sum is σ = 447557760. Its totient is φ = 99823104.

The previous prime is 222146417. The next prime is 222146543. The reversal of 222146505 is 505641222.

222146505 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 4 + 650 + 5 = 666.

It is not a de Polignac number, because 222146505 - 2⁹ = 222145993 is a prime.

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, 12609 + ... + 24561.

It is an arithmetic number, because the mean of its divisors is an integer number (9324120).

Almost surely, 2^222146505 is an apocalyptic number.

It is an amenable number.

222146505 is an abundant number, since it is smaller than the sum of its proper divisors (225411255).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222146505 is a wasteful number, since it uses less digits than its factorization.

222146505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12030 (or 12027 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 222146505 is about 14904.5800007917. The cubic root of 222146505 is about 605.6380628007.

Adding to 222146505 its reverse (505641222), we get a palindrome (727787727).

The spelling of 222146505 in words is "two hundred twenty-two million, one hundred forty-six thousand, five hundred five".