21113221330000 has 200 divisors, whose sum is σ = 51930204115328. Its totient is φ = 8311476096000.

The previous prime is 21113221329979. The next prime is 21113221330021. The reversal of 21113221330000 is 3312231112.

It is an interprime number because it is at equal distance from previous prime (21113221329979) and next prime (21113221330021).

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

It is a super-2 number, since 2×21113221330000² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21113221330000.

It is a congruent number.

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, 337958767 + ... + 338021233.

Almost surely, 2^{21113221330000} is an apocalyptic number.

21113221330000 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 21113221330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25965102057664).

21113221330000 is an abundant number, since it is smaller than the sum of its proper divisors (30816982785328).

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

21113221330000 is an equidigital number, since it uses as much as digits as its factorization.

21113221330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63031 (or 63010 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21113221330000 its reverse (3312231112), we get a palindrome (21116533561112).

The spelling of 21113221330000 in words is "twenty-one trillion, one hundred thirteen billion, two hundred twenty-one million, three hundred thirty thousand".