21001310230 has 64 divisors (see below), whose sum is σ = 40668791040. Its totient is φ = 7780091904.

The previous prime is 21001310159. The next prime is 21001310233. The reversal of 21001310230 is 3201310012.

It is a super-3 number, since 3×21001310230³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21001310230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001310233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4254844 + ... + 4259776.

It is an arithmetic number, because the mean of its divisors is an integer number (635449860).

Almost surely, 2^21001310230 is an apocalyptic number.

21001310230 is a deficient number, since it is larger than the sum of its proper divisors (19667480810).

21001310230 is a wasteful number, since it uses less digits than its factorization.

21001310230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5353.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21001310230 its reverse (3201310012), we get a palindrome (24202620242).

The spelling of 21001310230 in words is "twenty-one billion, one million, three hundred ten thousand, two hundred thirty".