21303020010 has 64 divisors (see below), whose sum is σ = 52348488192. Its totient is φ = 5545275456.

The previous prime is 21303019949. The next prime is 21303020033. The reversal of 21303020010 is 1002030312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2610757 + ... + 2618903.

It is an arithmetic number, because the mean of its divisors is an integer number (817945128).

Almost surely, 2^21303020010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303020010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26174244096).

21303020010 is an abundant number, since it is smaller than the sum of its proper divisors (31045468182).

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

21303020010 is a wasteful number, since it uses less digits than its factorization.

21303020010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10227.

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

Adding to 21303020010 its reverse (1002030312), we get a palindrome (22305050322).

The spelling of 21303020010 in words is "twenty-one billion, three hundred three million, twenty thousand, ten".