21203330340000 has 240 divisors, whose sum is σ = 70503934419072. Its totient is φ = 5576765184000.

The previous prime is 21203330339987. The next prime is 21203330340007. The reversal of 21203330340000 is 4303330212.

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

It is not an unprimeable number, because it can be changed into a prime (21203330340007) 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, 1959529 + ... + 6800471.

Almost surely, 2^{21203330340000} is an apocalyptic number.

21203330340000 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 21203330340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35251967209536).

21203330340000 is an abundant number, since it is smaller than the sum of its proper divisors (49300604079072).

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

21203330340000 is an equidigital number, since it uses as much as digits as its factorization.

21203330340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4841049 (or 4841026 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21203330340000 its reverse (4303330212), we get a palindrome (21207633670212).

The spelling of 21203330340000 in words is "twenty-one trillion, two hundred three billion, three hundred thirty million, three hundred forty thousand".