221234124403 has 4 divisors (see below), whose sum is σ = 221989189968. Its totient is φ = 220479058840.

The previous prime is 221234124359. The next prime is 221234124407. The reversal of 221234124403 is 304421432122.

221234124403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221234124403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221234124407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377532343 + ... + 377532928.

It is an arithmetic number, because the mean of its divisors is an integer number (55497297492).

Almost surely, 2^221234124403 is an apocalyptic number.

221234124403 is a deficient number, since it is larger than the sum of its proper divisors (755065565).

221234124403 is an equidigital number, since it uses as much as digits as its factorization.

221234124403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755065564.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221234124403 its reverse (304421432122), we get a palindrome (525655556525).

The spelling of 221234124403 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred twenty-four thousand, four hundred three".