111400661120 has 384 divisors, whose sum is σ = 316936488960. Its totient is φ = 37326127104.

The previous prime is 111400661081. The next prime is 111400661147. The reversal of 111400661120 is 21166004111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330565592 + ... + 330565928.

It is an arithmetic number, because the mean of its divisors is an integer number (825355440).

Almost surely, 2^111400661120 is an apocalyptic number.

111400661120 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 111400661120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158468244480).

111400661120 is an abundant number, since it is smaller than the sum of its proper divisors (205535827840).

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

111400661120 is a wasteful number, since it uses less digits than its factorization.

111400661120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 111400661120 its reverse (21166004111), we get a palindrome (132566665231).

The spelling of 111400661120 in words is "one hundred eleven billion, four hundred million, six hundred sixty-one thousand, one hundred twenty".