111203000100 has 108 divisors (see below), whose sum is σ = 348871546660. Its totient is φ = 29627596800.

The previous prime is 111203000087. The next prime is 111203000131. The reversal of 111203000100 is 1000302111.

It can be written as a sum of positive squares in 6 ways, for example, as 6195893796 + 105007106304 = 78714^2 + 324048^2 .

It is a super-2 number, since 2×111203000100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 961380 + ... + 1070820.

Almost surely, 2^111203000100 is an apocalyptic number.

111203000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111203000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174435773330).

111203000100 is an abundant number, since it is smaller than the sum of its proper divisors (237668546560).

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

111203000100 is a wasteful number, since it uses less digits than its factorization.

111203000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110590 (or 110580 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 111203000100 its reverse (1000302111), we get a palindrome (112203302211).

The spelling of 111203000100 in words is "one hundred eleven billion, two hundred three million, one hundred", and thus it is an aban number.