111123012000 has 1728 divisors, whose sum is σ = 510050241792. Its totient is φ = 20579328000.

The previous prime is 111123011983. The next prime is 111123012053. The reversal of 111123012000 is 210321111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3831827986 + ... + 3831828014.

It is an arithmetic number, because the mean of its divisors is an integer number (295167964).

Almost surely, 2^111123012000 is an apocalyptic number.

111123012000 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 111123012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255025120896).

111123012000 is an abundant number, since it is smaller than the sum of its proper divisors (398927229792).

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

111123012000 is a wasteful number, since it uses less digits than its factorization.

111123012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 70 counting only the distinct ones).

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

Adding to 111123012000 its reverse (210321111), we get a palindrome (111333333111).

The spelling of 111123012000 in words is "one hundred eleven billion, one hundred twenty-three million, twelve thousand".