221431234120304 has 80 divisors (see below), whose sum is σ = 486905436057600. Its totient is φ = 96707943076608.

The previous prime is 221431234120301. The next prime is 221431234120367. The reversal of 221431234120304 is 403021432134122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221431234120301) by changing a digit.

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, 29051864 + ... + 35873015.

It is an arithmetic number, because the mean of its divisors is an integer number (6086317950720).

Almost surely, 2^{221431234120304} is an apocalyptic number.

It is an amenable number.

221431234120304 is an abundant number, since it is smaller than the sum of its proper divisors (265474201937296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221431234120304 is a wasteful number, since it uses less digits than its factorization.

221431234120304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64925782 (or 64925776 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 221431234120304 its reverse (403021432134122), we get a palindrome (624452666254426).

The spelling of 221431234120304 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, two hundred thirty-four million, one hundred twenty thousand, three hundred four".