21210310334 has 16 divisors (see below), whose sum is σ = 31860747360. Its totient is φ = 10590074880.

The previous prime is 21210310313. The next prime is 21210310343. The reversal of 21210310334 is 43301301212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7886462 + ... + 7889150.

It is an arithmetic number, because the mean of its divisors is an integer number (1991296710).

Almost surely, 2^21210310334 is an apocalyptic number.

21210310334 is a deficient number, since it is larger than the sum of its proper divisors (10650437026).

21210310334 is a wasteful number, since it uses less digits than its factorization.

21210310334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6835.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21210310334 its reverse (43301301212), we get a palindrome (64511611546).

The spelling of 21210310334 in words is "twenty-one billion, two hundred ten million, three hundred ten thousand, three hundred thirty-four".