221311120430044 has 48 divisors (see below), whose sum is σ = 397425856665600. Its totient is φ = 107791840406016.

The previous prime is 221311120430033. The next prime is 221311120430047. The reversal of 221311120430044 is 440034021113122.

It is a happy number.

It is a super-2 number, since 2×221311120430044² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221311120429994 and 221311120430021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221311120430047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39970872 + ... + 45169600.

It is an arithmetic number, because the mean of its divisors is an integer number (8279705347200).

Almost surely, 2^{221311120430044} is an apocalyptic number.

It is an amenable number.

221311120430044 is a deficient number, since it is larger than the sum of its proper divisors (176114736235556).

221311120430044 is a wasteful number, since it uses less digits than its factorization.

221311120430044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200222 (or 5200220 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 221311120430044 its reverse (440034021113122), we get a palindrome (661345141543166).

The spelling of 221311120430044 in words is "two hundred twenty-one trillion, three hundred eleven billion, one hundred twenty million, four hundred thirty thousand, forty-four".