12111123020 has 12 divisors (see below), whose sum is σ = 25433358384. Its totient is φ = 4844449200.

The previous prime is 12111122993. The next prime is 12111123053. The reversal of 12111123020 is 2032111121.

It is a junction number, because it is equal to n+sod(n) for n = 12111122986 and 12111123004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302778056 + ... + 302778095.

It is an arithmetic number, because the mean of its divisors is an integer number (2119446532).

Almost surely, 2^12111123020 is an apocalyptic number.

12111123020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111123020 is an abundant number, since it is smaller than the sum of its proper divisors (13322235364).

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

12111123020 is a wasteful number, since it uses less digits than its factorization.

12111123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605556160 (or 605556158 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12111123020 its reverse (2032111121), we get a palindrome (14143234141).

The spelling of 12111123020 in words is "twelve billion, one hundred eleven million, one hundred twenty-three thousand, twenty".