111200001020 has 24 divisors (see below), whose sum is σ = 237477970800. Its totient is φ = 43726101632.

The previous prime is 111200000963. The next prime is 111200001023. The reversal of 111200001020 is 20100002111.

It is a junction number, because it is equal to n+sod(n) for n = 111200000989 and 111200001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111200001023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47117465 + ... + 47119824.

It is an arithmetic number, because the mean of its divisors is an integer number (9894915450).

Almost surely, 2^111200001020 is an apocalyptic number.

111200001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200001020 is an abundant number, since it is smaller than the sum of its proper divisors (126277969780).

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

111200001020 is a wasteful number, since it uses less digits than its factorization.

111200001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94237357 (or 94237355 counting only the distinct ones).

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

Adding to 111200001020 its reverse (20100002111), we get a palindrome (131300003131).

The spelling of 111200001020 in words is "one hundred eleven billion, two hundred million, one thousand, twenty".