21021002100310 has 32 divisors (see below), whose sum is σ = 39142927632960. Its totient is φ = 8118378828672.

The previous prime is 21021002100257. The next prime is 21021002100361. The reversal of 21021002100310 is 1300120012012.

It is a super-2 number, since 2×21021002100310² (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 15 ways as a sum of consecutive naturals, for example, 37306392 + ... + 37865668.

It is an arithmetic number, because the mean of its divisors is an integer number (1223216488530).

Almost surely, 2^{21021002100310} is an apocalyptic number.

21021002100310 is a deficient number, since it is larger than the sum of its proper divisors (18121925532650).

21021002100310 is a wasteful number, since it uses less digits than its factorization.

21021002100310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688920.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21021002100310 its reverse (1300120012012), we get a palindrome (22321122112322).

The spelling of 21021002100310 in words is "twenty-one trillion, twenty-one billion, two million, one hundred thousand, three hundred ten".