221440430403 has 12 divisors (see below), whose sum is σ = 319862507848. Its totient is φ = 147625057440.

The previous prime is 221440430383. The next prime is 221440430411. The reversal of 221440430403 is 304034044122.

It is a happy number.

221440430403 is a `hidden beast` number, since 2 + 214 + 4 + 0 + 43 + 0 + 403 = 666.

It is not a de Polignac number, because 221440430403 - 2¹³ = 221440422211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221440430803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1161888 + ... + 1338978.

Almost surely, 2^221440430403 is an apocalyptic number.

221440430403 is a deficient number, since it is larger than the sum of its proper divisors (98422077445).

221440430403 is a wasteful number, since it uses less digits than its factorization.

221440430403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316034 (or 316031 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 221440430403 its reverse (304034044122), we get a palindrome (525474474525).

The spelling of 221440430403 in words is "two hundred twenty-one billion, four hundred forty million, four hundred thirty thousand, four hundred three".