111211230 has 64 divisors (see below), whose sum is σ = 297380160. Its totient is φ = 26428416.

The previous prime is 111211207. The next prime is 111211249. The reversal of 111211230 is 32112111.

It is a super-2 number, since 2×111211230² = 24735875356225800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6394 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (4646565).

Almost surely, 2^111211230 is an apocalyptic number.

111211230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111211230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148690080).

111211230 is an abundant number, since it is smaller than the sum of its proper divisors (186168930).

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

111211230 is a wasteful number, since it uses less digits than its factorization.

111211230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9885.

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

The square root of 111211230 is about 10545.6735204538. The cubic root of 111211230 is about 480.8942098449.

Adding to 111211230 its reverse (32112111), we get a palindrome (143323341).

The spelling of 111211230 in words is "one hundred eleven million, two hundred eleven thousand, two hundred thirty".