21210103012310 has 8 divisors (see below), whose sum is σ = 38178185422176. Its totient is φ = 8484041204920.

The previous prime is 21210103012247. The next prime is 21210103012339. The reversal of 21210103012310 is 1321030101212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21210103012310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060505150606 + ... + 1060505150625.

It is an arithmetic number, because the mean of its divisors is an integer number (4772273177772).

Almost surely, 2^{21210103012310} is an apocalyptic number.

21210103012310 is a deficient number, since it is larger than the sum of its proper divisors (16968082409866).

21210103012310 is a wasteful number, since it uses less digits than its factorization.

21210103012310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121010301238.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21210103012310 its reverse (1321030101212), we get a palindrome (22531133113522).

The spelling of 21210103012310 in words is "twenty-one trillion, two hundred ten billion, one hundred three million, twelve thousand, three hundred ten".