12111045020 has 12 divisors (see below), whose sum is σ = 25433194584. Its totient is φ = 4844418000.

The previous prime is 12111045019. The next prime is 12111045043. The reversal of 12111045020 is 2054011121.

It is a super-2 number, since 2×12111045020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12111045020.

It is a congruent number.

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, 302776106 + ... + 302776145.

It is an arithmetic number, because the mean of its divisors is an integer number (2119432882).

Almost surely, 2^12111045020 is an apocalyptic number.

12111045020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111045020 is an abundant number, since it is smaller than the sum of its proper divisors (13322149564).

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

12111045020 is a wasteful number, since it uses less digits than its factorization.

12111045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605552260 (or 605552258 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12111045020 its reverse (2054011121), we get a palindrome (14165056141).

The spelling of 12111045020 in words is "twelve billion, one hundred eleven million, forty-five thousand, twenty".