111011220000 has 180 divisors, whose sum is σ = 394484560470. Its totient is φ = 29602944000.

The previous prime is 111011219981. The next prime is 111011220017. The reversal of 111011220000 is 22110111.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 1230325776 + 109780894224 = 35076^2 + 331332^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 128365 + ... + 488364.

Almost surely, 2^111011220000 is an apocalyptic number.

111011220000 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 111011220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197242280235).

111011220000 is an abundant number, since it is smaller than the sum of its proper divisors (283473340470).

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

111011220000 is an equidigital number, since it uses as much as digits as its factorization.

111011220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616765 (or 616739 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111011220000 its reverse (22110111), we get a palindrome (111033330111).

The spelling of 111011220000 in words is "one hundred eleven billion, eleven million, two hundred twenty thousand".