221113424 has 40 divisors (see below), whose sum is σ = 518413248. Its totient is φ = 89187840.

The previous prime is 221113397. The next prime is 221113433. The reversal of 221113424 is 424311122.

221113424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221113424² = 97782292546007552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221113396 and 221113405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56162 + ... + 59969.

Almost surely, 2^221113424 is an apocalyptic number.

It is an amenable number.

221113424 is an abundant number, since it is smaller than the sum of its proper divisors (297299824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221113424 is a wasteful number, since it uses less digits than its factorization.

221113424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116163 (or 116157 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 221113424 is about 14869.8831199173. The cubic root of 221113424 is about 604.6977740542.

Adding to 221113424 its reverse (424311122), we get a palindrome (645424546).

The spelling of 221113424 in words is "two hundred twenty-one million, one hundred thirteen thousand, four hundred twenty-four".