221240234403 has 12 divisors (see below), whose sum is σ = 319573651488. Its totient is φ = 147491447760.

The previous prime is 221240234401. The next prime is 221240234443. The reversal of 221240234403 is 304432042122.

221240234403 is a `hidden beast` number, since 2 + 2 + 1 + 24 + 0 + 234 + 403 = 666.

It is not a de Polignac number, because 221240234403 - 2¹ = 221240234401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221240234401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 818293 + ... + 1054553.

It is an arithmetic number, because the mean of its divisors is an integer number (26631137624).

Almost surely, 2^221240234403 is an apocalyptic number.

221240234403 is a deficient number, since it is larger than the sum of its proper divisors (98333417085).

221240234403 is a wasteful number, since it uses less digits than its factorization.

221240234403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340314 (or 340311 counting only the distinct ones).

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

Adding to 221240234403 its reverse (304432042122), we get a palindrome (525672276525).

The spelling of 221240234403 in words is "two hundred twenty-one billion, two hundred forty million, two hundred thirty-four thousand, four hundred three".