111216501550000 has 1920 divisors, whose sum is σ = 366984271503360. Its totient is φ = 31595059200000.

The previous prime is 111216501549973. The next prime is 111216501550061. The reversal of 111216501550000 is 55105612111.

It is a super-2 number, since 2×111216501550000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 320508649827 + ... + 320508650173.

It is an arithmetic number, because the mean of its divisors is an integer number (191137641408).

Almost surely, 2^{111216501550000} is an apocalyptic number.

111216501550000 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 111216501550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183492135751680).

111216501550000 is an abundant number, since it is smaller than the sum of its proper divisors (255767769953360).

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

111216501550000 is a wasteful number, since it uses less digits than its factorization.

111216501550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 111216501550000 in words is "one hundred eleven trillion, two hundred sixteen billion, five hundred one million, five hundred fifty thousand".