21030210010000 has 100 divisors (see below), whose sum is σ = 51560752777600. Its totient is φ = 8305601616000.

The previous prime is 21030210009979. The next prime is 21030210010009. The reversal of 21030210010000 is 1001203012.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21030210010009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12520260 + ... + 14100259.

It is an arithmetic number, because the mean of its divisors is an integer number (515607527776).

Almost surely, 2^{21030210010000} is an apocalyptic number.

21030210010000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030210010000 is an abundant number, since it is smaller than the sum of its proper divisors (30530542767600).

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

21030210010000 is an equidigital number, since it uses as much as digits as its factorization.

21030210010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620626 (or 26620605 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21030210010000 its reverse (1001203012), we get a palindrome (21031211213012).

The spelling of 21030210010000 in words is "twenty-one trillion, thirty billion, two hundred ten million, ten thousand".