221012113 has 8 divisors (see below), whose sum is σ = 260733440. Its totient is φ = 183327840.

The previous prime is 221012111. The next prime is 221012119. The reversal of 221012113 is 311210122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221012113 - 2¹ = 221012111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221012093 and 221012102.

It is not an unprimeable number, because it can be changed into a prime (221012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509028 + ... + 509461.

It is an arithmetic number, because the mean of its divisors is an integer number (32591680).

Almost surely, 2^221012113 is an apocalyptic number.

It is an amenable number.

221012113 is a deficient number, since it is larger than the sum of its proper divisors (39721327).

221012113 is a wasteful number, since it uses less digits than its factorization.

221012113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018527.

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

The square root of 221012113 is about 14866.4761460139. The cubic root of 221012113 is about 604.6054053293.

Adding to 221012113 its reverse (311210122), we get a palindrome (532222235).

The spelling of 221012113 in words is "two hundred twenty-one million, twelve thousand, one hundred thirteen".