111224851920 has 480 divisors, whose sum is σ = 476763985152. Its totient is φ = 23466848256.

The previous prime is 111224851897. The next prime is 111224851937. The reversal of 111224851920 is 29158422111.

111224851920 is a `hidden beast` number, since 1 + 112 + 2 + 4 + 8 + 519 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1737604 + ... + 1800476.

Almost surely, 2^111224851920 is an apocalyptic number.

111224851920 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 111224851920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238381992576).

111224851920 is an abundant number, since it is smaller than the sum of its proper divisors (365539133232).

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

111224851920 is a wasteful number, since it uses less digits than its factorization.

111224851920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62921 (or 62903 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The spelling of 111224851920 in words is "one hundred eleven billion, two hundred twenty-four million, eight hundred fifty-one thousand, nine hundred twenty".