231221012010110 has 16 divisors (see below), whose sum is σ = 420874201638000. Its totient is φ = 91449209244096.

The previous prime is 231221012010103. The next prime is 231221012010127. The reversal of 231221012010110 is 11010210122132.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 129899444060 + ... + 129899445839.

It is an arithmetic number, because the mean of its divisors is an integer number (26304637602375).

Almost surely, 2^{231221012010110} is an apocalyptic number.

231221012010110 is a deficient number, since it is larger than the sum of its proper divisors (189653189627890).

231221012010110 is a wasteful number, since it uses less digits than its factorization.

231221012010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259798889995.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 231221012010110 its reverse (11010210122132), we get a palindrome (242231222132242).

The spelling of 231221012010110 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, twelve million, ten thousand, one hundred ten".