221113012 has 12 divisors (see below), whose sum is σ = 387739296. Its totient is φ = 110330360.

The previous prime is 221112977. The next prime is 221113037. The reversal of 221113012 is 210311122.

It is a junction number, because it is equal to n+sod(n) for n = 221112983 and 221113001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54328 + ... + 58255.

It is an arithmetic number, because the mean of its divisors is an integer number (32311608).

Almost surely, 2^221113012 is an apocalyptic number.

It is an amenable number.

221113012 is a deficient number, since it is larger than the sum of its proper divisors (166626284).

221113012 is a wasteful number, since it uses less digits than its factorization.

221113012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113078 (or 113076 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221113012 is about 14869.8692664058. The cubic root of 221113012 is about 604.6973984768.

Adding to 221113012 its reverse (210311122), we get a palindrome (431424134).

The spelling of 221113012 in words is "two hundred twenty-one million, one hundred thirteen thousand, twelve".