111123201000 has 128 divisors (see below), whose sum is σ = 396233660160. Its totient is φ = 25399584000.

The previous prime is 111123200953. The next prime is 111123201031. The reversal of 111123201000 is 102321111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2624791 + ... + 2666790.

It is an arithmetic number, because the mean of its divisors is an integer number (3095575470).

Almost surely, 2^111123201000 is an apocalyptic number.

111123201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111123201000 is an abundant number, since it is smaller than the sum of its proper divisors (285110459160).

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

111123201000 is a wasteful number, since it uses less digits than its factorization.

111123201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5291612 (or 5291598 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111123201000 its reverse (102321111), we get a palindrome (111225522111).

The spelling of 111123201000 in words is "one hundred eleven billion, one hundred twenty-three million, two hundred one thousand".