1230111120 has 80 divisors (see below), whose sum is σ = 4358113920. Its totient is φ = 281167872.

The previous prime is 1230111073. The next prime is 1230111121. The reversal of 1230111120 is 211110321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1230111096 and 1230111105.

It is not an unprimeable number, because it can be changed into a prime (1230111121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364425 + ... + 367784.

It is an arithmetic number, because the mean of its divisors is an integer number (54476424).

Almost surely, 2^1230111120 is an apocalyptic number.

1230111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230111120 is an abundant number, since it is smaller than the sum of its proper divisors (3128002800).

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

1230111120 is a wasteful number, since it uses less digits than its factorization.

1230111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732232 (or 732226 counting only the distinct ones).

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

The square root of 1230111120 is about 35072.9399965272. The cubic root of 1230111120 is about 1071.4735339099.

Adding to 1230111120 its reverse (211110321), we get a palindrome (1441221441).

The spelling of 1230111120 in words is "one billion, two hundred thirty million, one hundred eleven thousand, one hundred twenty".