213120021230 has 32 divisors (see below), whose sum is σ = 385422105600. Its totient is φ = 84847034272.

The previous prime is 213120021223. The next prime is 213120021271. The reversal of 213120021230 is 32120021312.

It is a junction number, because it is equal to n+sod(n) for n = 213120021199 and 213120021208.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4764911 + ... + 4809429.

It is an arithmetic number, because the mean of its divisors is an integer number (12044440800).

Almost surely, 2^213120021230 is an apocalyptic number.

213120021230 is a deficient number, since it is larger than the sum of its proper divisors (172302084370).

213120021230 is a wasteful number, since it uses less digits than its factorization.

213120021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46768.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213120021230 its reverse (32120021312), we get a palindrome (245240042542).

The spelling of 213120021230 in words is "two hundred thirteen billion, one hundred twenty million, twenty-one thousand, two hundred thirty".