111221130 has 32 divisors (see below), whose sum is σ = 267245568. Its totient is φ = 29624000.

The previous prime is 111221101. The next prime is 111221141. The reversal of 111221130 is 31122111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32920 + ... + 36140.

It is an arithmetic number, because the mean of its divisors is an integer number (8351424).

Almost surely, 2^111221130 is an apocalyptic number.

111221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111221130 is an abundant number, since it is smaller than the sum of its proper divisors (156024438).

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

111221130 is a wasteful number, since it uses less digits than its factorization.

111221130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 111221130 is about 10546.1428968130. The cubic root of 111221130 is about 480.9084791215.

Adding to 111221130 its reverse (31122111), we get a palindrome (142343241).

The spelling of 111221130 in words is "one hundred eleven million, two hundred twenty-one thousand, one hundred thirty".