221442412403 has 8 divisors (see below), whose sum is σ = 234580713840. Its totient is φ = 208316586240.

The previous prime is 221442412391. The next prime is 221442412439. The reversal of 221442412403 is 304214244122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221442412403 - 2⁶ = 221442412339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221442412703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3082253 + ... + 3153278.

It is an arithmetic number, because the mean of its divisors is an integer number (29322589230).

Almost surely, 2^221442412403 is an apocalyptic number.

221442412403 is a deficient number, since it is larger than the sum of its proper divisors (13138301437).

221442412403 is a wasteful number, since it uses less digits than its factorization.

221442412403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237637.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 221442412403 its reverse (304214244122), we get a palindrome (525656656525).

The spelling of 221442412403 in words is "two hundred twenty-one billion, four hundred forty-two million, four hundred twelve thousand, four hundred three".