221011131344 has 20 divisors (see below), whose sum is σ = 432211024224. Its totient is φ = 109472802528.

The previous prime is 221011131343. The next prime is 221011131347. The reversal of 221011131344 is 443131110122.

221011131344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011131343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64545932 + ... + 64549355.

Almost surely, 2^221011131344 is an apocalyptic number.

It is an amenable number.

221011131344 is a deficient number, since it is larger than the sum of its proper divisors (211199892880).

221011131344 is a wasteful number, since it uses less digits than its factorization.

221011131344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129095402 (or 129095396 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 221011131344 its reverse (443131110122), we get a palindrome (664142241466).

The spelling of 221011131344 in words is "two hundred twenty-one billion, eleven million, one hundred thirty-one thousand, three hundred forty-four".