221112130 has 16 divisors (see below), whose sum is σ = 398541240. Its totient is φ = 88324992.

The previous prime is 221112121. The next prime is 221112161. The reversal of 221112130 is 31211122.

It can be written as a sum of positive squares in 4 ways, for example, as 179908569 + 41203561 = 13413^2 + 6419^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221112130.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7035 + ... + 22174.

Almost surely, 2^221112130 is an apocalyptic number.

221112130 is a deficient number, since it is larger than the sum of its proper divisors (177429110).

221112130 is a wasteful number, since it uses less digits than its factorization.

221112130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29973.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221112130 is about 14869.8396090879. The cubic root of 221112130 is about 604.6965944478.

Adding to 221112130 its reverse (31211122), we get a palindrome (252323252).

It can be divided in two parts, 2211 and 12130, that added together give a palindrome (14341).

The spelling of 221112130 in words is "two hundred twenty-one million, one hundred twelve thousand, one hundred thirty".