111215012040 has 320 divisors, whose sum is σ = 408348864000. Its totient is φ = 26924175360.

The previous prime is 111215012011. The next prime is 111215012057. The reversal of 111215012040 is 40210512111.

111215012040 is a `hidden beast` number, since 1 + 1 + 121 + 501 + 2 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 79 ways as a sum of consecutive naturals, for example, 33107881 + ... + 33111239.

It is an arithmetic number, because the mean of its divisors is an integer number (1276090200).

Almost surely, 2^111215012040 is an apocalyptic number.

111215012040 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 111215012040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204174432000).

111215012040 is an abundant number, since it is smaller than the sum of its proper divisors (297133851960).

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

111215012040 is a wasteful number, since it uses less digits than its factorization.

111215012040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

Adding to 111215012040 its reverse (40210512111), we get a palindrome (151425524151).

The spelling of 111215012040 in words is "one hundred eleven billion, two hundred fifteen million, twelve thousand, forty".