221123032412 has 12 divisors (see below), whose sum is σ = 387228379776. Its totient is φ = 110486352480.

The previous prime is 221123032391. The next prime is 221123032513. The reversal of 221123032412 is 214230321122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18784313 + ... + 18796080.

It is an arithmetic number, because the mean of its divisors is an integer number (32269031648).

Almost surely, 2^221123032412 is an apocalyptic number.

It is an amenable number.

221123032412 is a deficient number, since it is larger than the sum of its proper divisors (166105347364).

221123032412 is a wasteful number, since it uses less digits than its factorization.

221123032412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37581868 (or 37581866 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221123032412 its reverse (214230321122), we get a palindrome (435353353534).

The spelling of 221123032412 in words is "two hundred twenty-one billion, one hundred twenty-three million, thirty-two thousand, four hundred twelve".