111121012111000 has 128 divisors (see below), whose sum is σ = 260363184831360. Its totient is φ = 44390301120000.

The previous prime is 111121012110991. The next prime is 111121012111049. The reversal of 111121012111000 is 111210121111.

It is a congruent number.

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, 8782180674 + ... + 8782193326.

It is an arithmetic number, because the mean of its divisors is an integer number (2034087381495).

Almost surely, 2^{111121012111000} is an apocalyptic number.

111121012111000 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 111121012111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130181592415680).

111121012111000 is an abundant number, since it is smaller than the sum of its proper divisors (149242172720360).

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

111121012111000 is a wasteful number, since it uses less digits than its factorization.

111121012111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23462 (or 23448 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111121012111000 its reverse (111210121111), we get a palindrome (111232222232111).

The spelling of 111121012111000 in words is "one hundred eleven trillion, one hundred twenty-one billion, twelve million, one hundred eleven thousand".