221011324 has 12 divisors (see below), whose sum is σ = 403586064. Its totient is φ = 105701024.

The previous prime is 221011319. The next prime is 221011327. The reversal of 221011324 is 423110122.

It is a junction number, because it is equal to n+sod(n) for n = 221011298 and 221011307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011327) 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, 1201057 + ... + 1201240.

It is an arithmetic number, because the mean of its divisors is an integer number (33632172).

Almost surely, 2^221011324 is an apocalyptic number.

It is an amenable number.

221011324 is a deficient number, since it is larger than the sum of its proper divisors (182574740).

221011324 is a wasteful number, since it uses less digits than its factorization.

221011324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2402324 (or 2402322 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 221011324 is about 14866.4496097757. The cubic root of 221011324 is about 604.6046858601.

Adding to 221011324 its reverse (423110122), we get a palindrome (644121446).

The spelling of 221011324 in words is "two hundred twenty-one million, eleven thousand, three hundred twenty-four".