221233113 has 20 divisors (see below), whose sum is σ = 344855808. Its totient is φ = 141075000.

The previous prime is 221233109. The next prime is 221233139. The reversal of 221233113 is 311332122.

It is not a de Polignac number, because 221233113 - 2² = 221233109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221233163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 57513 + ... + 61238.

Almost surely, 2^221233113 is an apocalyptic number.

221233113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221233113 is a deficient number, since it is larger than the sum of its proper divisors (123622695).

221233113 is a wasteful number, since it uses less digits than its factorization.

221233113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118786 (or 118777 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 221233113 is about 14873.9071195164. The cubic root of 221233113 is about 604.8068622851.

Adding to 221233113 its reverse (311332122), we get a palindrome (532565235).

Subtracting 221233113 from its reverse (311332122), we obtain a palindrome (90099009).

The spelling of 221233113 in words is "two hundred twenty-one million, two hundred thirty-three thousand, one hundred thirteen".