221440233403 has 2 divisors, whose sum is σ = 221440233404. Its totient is φ = 221440233402.

The previous prime is 221440233397. The next prime is 221440233419. The reversal of 221440233403 is 304332044122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221440233403 - 2⁹ = 221440232891 is a prime.

It is not a weakly prime, because it can be changed into another prime (221440233433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110720116701 + 110720116702.

It is an arithmetic number, because the mean of its divisors is an integer number (110720116702).

Almost surely, 2^221440233403 is an apocalyptic number.

221440233403 is a deficient number, since it is larger than the sum of its proper divisors (1).

221440233403 is an equidigital number, since it uses as much as digits as its factorization.

221440233403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221440233403 its reverse (304332044122), we get a palindrome (525772277525).

The spelling of 221440233403 in words is "two hundred twenty-one billion, four hundred forty million, two hundred thirty-three thousand, four hundred three".