111243212020 has 24 divisors (see below), whose sum is σ = 233691784704. Its totient is φ = 44481848736.

The previous prime is 111243212011. The next prime is 111243212033. The reversal of 111243212020 is 20212342111.

111243212020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905572 + ... + 1021051.

It is an arithmetic number, because the mean of its divisors is an integer number (9737157696).

Almost surely, 2^111243212020 is an apocalyptic number.

111243212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111243212020 is an abundant number, since it is smaller than the sum of its proper divisors (122448572684).

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

111243212020 is a wasteful number, since it uses less digits than its factorization.

111243212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929519 (or 1929517 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 111243212020 its reverse (20212342111), we get a palindrome (131455554131).

The spelling of 111243212020 in words is "one hundred eleven billion, two hundred forty-three million, two hundred twelve thousand, twenty".