20130112233 has 144 divisors (see below), whose sum is σ = 40772025216. Its totient is φ = 9413268480.

The previous prime is 20130112217. The next prime is 20130112273. The reversal of 20130112233 is 33221103102.

It is not a de Polignac number, because 20130112233 - 2⁴ = 20130112217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20130112273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1891435 + ... + 1902047.

It is an arithmetic number, because the mean of its divisors is an integer number (283139064).

Almost surely, 2^20130112233 is an apocalyptic number.

20130112233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20130112233 is an abundant number, since it is smaller than the sum of its proper divisors (20641912983).

20130112233 is a wasteful number, since it uses less digits than its factorization.

20130112233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10684 (or 10674 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20130112233 its reverse (33221103102), we get a palindrome (53351215335).

The spelling of 20130112233 in words is "twenty billion, one hundred thirty million, one hundred twelve thousand, two hundred thirty-three".