21203310000 has 200 divisors, whose sum is σ = 68612037120. Its totient is φ = 5640608000.

The previous prime is 21203309987. The next prime is 21203310013. The reversal of 21203310000 is 1330212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21203309987) and next prime (21203310013).

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

It is a super-2 number, since 2×21203310000² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21569509 + ... + 21570491.

Almost surely, 2^21203310000 is an apocalyptic number.

21203310000 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 21203310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34306018560).

21203310000 is an abundant number, since it is smaller than the sum of its proper divisors (47408727120).

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

21203310000 is an equidigital number, since it uses as much as digits as its factorization.

21203310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21203310000 its reverse (1330212), we get a palindrome (21204640212).

The spelling of 21203310000 in words is "twenty-one billion, two hundred three million, three hundred ten thousand".