221224322404 has 24 divisors (see below), whose sum is σ = 391443003000. Its totient is φ = 109389949440.

The previous prime is 221224322401. The next prime is 221224322413. The reversal of 221224322404 is 404223422122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19307102500 + 201917219904 = 138950^2 + 449352^2 .

It is not an unprimeable number, because it can be changed into a prime (221224322401) 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, 673957 + ... + 946924.

It is an arithmetic number, because the mean of its divisors is an integer number (16310125125).

Almost surely, 2^221224322404 is an apocalyptic number.

It is an amenable number.

221224322404 is a deficient number, since it is larger than the sum of its proper divisors (170218680596).

221224322404 is a wasteful number, since it uses less digits than its factorization.

221224322404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621263 (or 1621261 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221224322404 its reverse (404223422122), we get a palindrome (625447744526).

The spelling of 221224322404 in words is "two hundred twenty-one billion, two hundred twenty-four million, three hundred twenty-two thousand, four hundred four".