12110111020 has 24 divisors (see below), whose sum is σ = 29064266784. Its totient is φ = 4152038016.

The previous prime is 12110111017. The next prime is 12110111029. The reversal of 12110111020 is 2011101121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12110110988 and 12110111006.

It is not an unprimeable number, because it can be changed into a prime (12110111029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43250257 + ... + 43250536.

It is an arithmetic number, because the mean of its divisors is an integer number (1211011116).

Almost surely, 2^12110111020 is an apocalyptic number.

12110111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12110111020 is an abundant number, since it is smaller than the sum of its proper divisors (16954155764).

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

12110111020 is a wasteful number, since it uses less digits than its factorization.

12110111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86500809 (or 86500807 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12110111020 its reverse (2011101121), we get a palindrome (14121212141).

The spelling of 12110111020 in words is "twelve billion, one hundred ten million, one hundred eleven thousand, twenty".