1111200000020 has 48 divisors (see below), whose sum is σ = 2633439513600. Its totient is φ = 390139182720.

The previous prime is 1111200000007. The next prime is 1111200000041. The reversal of 1111200000020 is 200000021111.

It is a junction number, because it is equal to n+sod(n) for n = 1111199999953 and 1111200000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87078260 + ... + 87091019.

It is an arithmetic number, because the mean of its divisors is an integer number (54863323200).

Almost surely, 2^{1111200000020} is an apocalyptic number.

1111200000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111200000020 is an abundant number, since it is smaller than the sum of its proper divisors (1522239513580).

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

1111200000020 is a wasteful number, since it uses less digits than its factorization.

1111200000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174169328 (or 174169326 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1111200000020 its reverse (200000021111), we get a palindrome (1311200021131).

The spelling of 1111200000020 in words is "one trillion, one hundred eleven billion, two hundred million, twenty", and thus it is an aban number.