231221213210230 has 64 divisors (see below), whose sum is σ = 417251540791296. Its totient is φ = 92254776336000.

The previous prime is 231221213210227. The next prime is 231221213210287. The reversal of 231221213210230 is 32012312122132.

It is a junction number, because it is equal to n+sod(n) for n = 231221213210195 and 231221213210204.

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 31 ways as a sum of consecutive naturals, for example, 37227691825 + ... + 37227698035.

It is an arithmetic number, because the mean of its divisors is an integer number (6519555324864).

Almost surely, 2^{231221213210230} is an apocalyptic number.

231221213210230 is a deficient number, since it is larger than the sum of its proper divisors (186030327581066).

231221213210230 is a wasteful number, since it uses less digits than its factorization.

231221213210230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12253.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 231221213210230 its reverse (32012312122132), we get a palindrome (263233525332362).

The spelling of 231221213210230 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, two hundred thirteen million, two hundred ten thousand, two hundred thirty".