21210230321230 has 32 divisors (see below), whose sum is σ = 39849578740224. Its totient is φ = 8112930335136.

The previous prime is 21210230321219. The next prime is 21210230321297. The reversal of 21210230321230 is 3212303201212.

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, 12183682 + ... + 13815301.

It is an arithmetic number, because the mean of its divisors is an integer number (1245299335632).

Almost surely, 2^{21210230321230} is an apocalyptic number.

21210230321230 is a deficient number, since it is larger than the sum of its proper divisors (18639348418994).

21210230321230 is a wasteful number, since it uses less digits than its factorization.

21210230321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26002560.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21210230321230 its reverse (3212303201212), we get a palindrome (24422533522442).

The spelling of 21210230321230 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty million, three hundred twenty-one thousand, two hundred thirty".