221113413 has 6 divisors (see below), whose sum is σ = 319386054. Its totient is φ = 147408936.

The previous prime is 221113397. The next prime is 221113433. The reversal of 221113413 is 314311122.

It can be written as a sum of positive squares in only one way, i.e., 189943524 + 31169889 = 13782^2 + 5583^2 .

It is not a de Polignac number, because 221113413 - 2⁴ = 221113397 is a prime.

It is a super-2 number, since 2×221113413² = 97782282817017138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221113433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12284070 + ... + 12284087.

It is an arithmetic number, because the mean of its divisors is an integer number (53231009).

Almost surely, 2^221113413 is an apocalyptic number.

It is an amenable number.

221113413 is a deficient number, since it is larger than the sum of its proper divisors (98272641).

221113413 is a wasteful number, since it uses less digits than its factorization.

221113413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24568163 (or 24568160 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 221113413 is about 14869.8827500421. The cubic root of 221113413 is about 604.6977640266.

Adding to 221113413 its reverse (314311122), we get a palindrome (535424535).

The spelling of 221113413 in words is "two hundred twenty-one million, one hundred thirteen thousand, four hundred thirteen".