21210231023122 has 16 divisors (see below), whose sum is σ = 31982295245472. Its totient is φ = 10549552557600.

The previous prime is 21210231023087. The next prime is 21210231023141. The reversal of 21210231023122 is 22132013201212.

It is a junction number, because it is equal to n+sod(n) for n = 21210231023093 and 21210231023102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21163668 + ... + 22143199.

It is an arithmetic number, because the mean of its divisors is an integer number (1998893452842).

Almost surely, 2^{21210231023122} is an apocalyptic number.

21210231023122 is a deficient number, since it is larger than the sum of its proper divisors (10772064222350).

21210231023122 is a wasteful number, since it uses less digits than its factorization.

21210231023122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43308153.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21210231023122 its reverse (22132013201212), we get a palindrome (43342244224334).

The spelling of 21210231023122 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty-one million, twenty-three thousand, one hundred twenty-two".