221424313403 has 8 divisors (see below), whose sum is σ = 231056201376. Its totient is φ = 211792820800.

The previous prime is 221424313399. The next prime is 221424313423. The reversal of 221424313403 is 304313424122.

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 221424313403 - 2² = 221424313399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221424313423) 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, 1945223 + ... + 2055903.

It is an arithmetic number, because the mean of its divisors is an integer number (28882025172).

Almost surely, 2^221424313403 is an apocalyptic number.

221424313403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

221424313403 is a deficient number, since it is larger than the sum of its proper divisors (9631887973).

221424313403 is a wasteful number, since it uses less digits than its factorization.

221424313403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197685.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221424313403 its reverse (304313424122), we get a palindrome (525737737525).

The spelling of 221424313403 in words is "two hundred twenty-one billion, four hundred twenty-four million, three hundred thirteen thousand, four hundred three".