21230322310 has 32 divisors (see below), whose sum is σ = 38454043680. Its totient is φ = 8439011328.

The previous prime is 21230322301. The next prime is 21230322343. The reversal of 21230322310 is 1322303212.

It is a super-2 number, since 2×21230322310² (a number of 21 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, 1949661 + ... + 1960519.

It is an arithmetic number, because the mean of its divisors is an integer number (1201688865).

Almost surely, 2^21230322310 is an apocalyptic number.

21230322310 is a deficient number, since it is larger than the sum of its proper divisors (17223721370).

21230322310 is a wasteful number, since it uses less digits than its factorization.

21230322310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21230322310 its reverse (1322303212), we get a palindrome (22552625522).

The spelling of 21230322310 in words is "twenty-one billion, two hundred thirty million, three hundred twenty-two thousand, three hundred ten".