21110003220000 has 240 divisors, whose sum is σ = 69645327111360. Its totient is φ = 5596791936000.

The previous prime is 21110003219983. The next prime is 21110003220041. The reversal of 21110003220000 is 2230001112.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9363141 + ... + 11396859.

It is an arithmetic number, because the mean of its divisors is an integer number (290188862964).

Almost surely, 2^{21110003220000} is an apocalyptic number.

21110003220000 is a gapful number since it is divisible by the number (20) 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 21110003220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34822663555680).

21110003220000 is an abundant number, since it is smaller than the sum of its proper divisors (48535323891360).

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

21110003220000 is a wasteful number, since it uses less digits than its factorization.

21110003220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033925 (or 2033902 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21110003220000 its reverse (2230001112), we get a palindrome (21112233221112).

The spelling of 21110003220000 in words is "twenty-one trillion, one hundred ten billion, three million, two hundred twenty thousand".