111221310000 has 200 divisors, whose sum is σ = 380158797744. Its totient is φ = 27914240000.

The previous prime is 111221309939. The next prime is 111221310007. The reversal of 111221310000 is 13122111.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×111221310000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (111221310007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 400960 + ... + 619040.

Almost surely, 2^111221310000 is an apocalyptic number.

111221310000 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 111221310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190079398872).

111221310000 is an abundant number, since it is smaller than the sum of its proper divisors (268937487744).

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

111221310000 is a wasteful number, since it uses less digits than its factorization.

111221310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218129 (or 218108 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 111221310000 its reverse (13122111), we get a palindrome (111234432111).

The spelling of 111221310000 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred ten thousand".