111021200020 has 24 divisors (see below), whose sum is σ = 233152827264. Its totient is φ = 44406897696.

The previous prime is 111021200011. The next prime is 111021200107. The reversal of 111021200020 is 20002120111.

111021200020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

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, 595297 + ... + 759223.

It is an arithmetic number, because the mean of its divisors is an integer number (9714701136).

Almost surely, 2^111021200020 is an apocalyptic number.

111021200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021200020 is an abundant number, since it is smaller than the sum of its proper divisors (122131627244).

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

111021200020 is a wasteful number, since it uses less digits than its factorization.

111021200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197799 (or 197797 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111021200020 its reverse (20002120111), we get a palindrome (131023320131).

The spelling of 111021200020 in words is "one hundred eleven billion, twenty-one million, two hundred thousand, twenty".