21310201302 has 64 divisors (see below), whose sum is σ = 46686689280. Its totient is φ = 6444877824.

The previous prime is 21310201291. The next prime is 21310201321. The reversal of 21310201302 is 20310201312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2498998 + ... + 2507510.

It is an arithmetic number, because the mean of its divisors is an integer number (729479520).

Almost surely, 2^21310201302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21310201302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23343344640).

21310201302 is an abundant number, since it is smaller than the sum of its proper divisors (25376487978).

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

21310201302 is a wasteful number, since it uses less digits than its factorization.

21310201302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21310201302 its reverse (20310201312), we get a palindrome (41620402614).

The spelling of 21310201302 in words is "twenty-one billion, three hundred ten million, two hundred one thousand, three hundred two".