21123230310122 has 8 divisors (see below), whose sum is σ = 31686058639200. Its totient is φ = 10561210763724.

The previous prime is 21123230310079. The next prime is 21123230310209. The reversal of 21123230310122 is 22101303232112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202130372 + ... + 202234847.

It is an arithmetic number, because the mean of its divisors is an integer number (3960757329900).

Almost surely, 2^{21123230310122} is an apocalyptic number.

21123230310122 is a deficient number, since it is larger than the sum of its proper divisors (10562828329078).

21123230310122 is a wasteful number, since it uses less digits than its factorization.

21123230310122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404391340.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21123230310122 its reverse (22101303232112), we get a palindrome (43224533542234).

The spelling of 21123230310122 in words is "twenty-one trillion, one hundred twenty-three billion, two hundred thirty million, three hundred ten thousand, one hundred twenty-two".