221301043124 has 48 divisors (see below), whose sum is σ = 448043073408. Its totient is φ = 93677933568.

The previous prime is 221301043069. The next prime is 221301043127. The reversal of 221301043124 is 421340103122.

It is a self number, because there is not a number n which added to its sum of digits gives 221301043124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301043127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12524504 + ... + 12542160.

It is an arithmetic number, because the mean of its divisors is an integer number (9334230696).

Almost surely, 2^221301043124 is an apocalyptic number.

It is an amenable number.

221301043124 is an abundant number, since it is smaller than the sum of its proper divisors (226742030284).

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

221301043124 is a wasteful number, since it uses less digits than its factorization.

221301043124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23144 (or 23142 counting only the distinct ones).

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

Adding to 221301043124 its reverse (421340103122), we get a palindrome (642641146246).

The spelling of 221301043124 in words is "two hundred twenty-one billion, three hundred one million, forty-three thousand, one hundred twenty-four".