111221900640000 has 2160 divisors, whose sum is σ = 420168113164800. Its totient is φ = 28267978752000.

The previous prime is 111221900639963. The next prime is 111221900640001. The reversal of 111221900640000 is 46009122111.

111221900640000 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 2 + 19 + 0 + 0 + 640 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×111221900640000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221900640001) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 489964319887 + ... + 489964320113.

Almost surely, 2^{111221900640000} is an apocalyptic number.

111221900640000 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 111221900640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210084056582400).

111221900640000 is an abundant number, since it is smaller than the sum of its proper divisors (308946212524800).

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

111221900640000 is an equidigital number, since it uses as much as digits as its factorization.

111221900640000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 111221900640000 its reverse (46009122111), we get a palindrome (111267909762111).

The spelling of 111221900640000 in words is "one hundred eleven trillion, two hundred twenty-one billion, nine hundred million, six hundred forty thousand".