221313043124 has 6 divisors (see below), whose sum is σ = 387297825474. Its totient is φ = 110656521560.

The previous prime is 221313043111. The next prime is 221313043139. The reversal of 221313043124 is 421340313122.

221313043124 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 173290703524 + 48022339600 = 416282^2 + 219140^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221313043093 and 221313043102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27664130387 + ... + 27664130394.

It is an arithmetic number, because the mean of its divisors is an integer number (64549637579).

Almost surely, 2^221313043124 is an apocalyptic number.

It is an amenable number.

221313043124 is a deficient number, since it is larger than the sum of its proper divisors (165984782350).

221313043124 is a wasteful number, since it uses less digits than its factorization.

221313043124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55328260785 (or 55328260783 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221313043124 its reverse (421340313122), we get a palindrome (642653356246).

The spelling of 221313043124 in words is "two hundred twenty-one billion, three hundred thirteen million, forty-three thousand, one hundred twenty-four".