221120013 has 8 divisors (see below), whose sum is σ = 294896448. Its totient is φ = 147378464.

The previous prime is 221119991. The next prime is 221120017. The reversal of 221120013 is 310021122.

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 221120013 - 2⁵ = 221119981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16456 + ... + 26702.

It is an arithmetic number, because the mean of its divisors is an integer number (36862056).

Almost surely, 2^221120013 is an apocalyptic number.

It is an amenable number.

221120013 is a deficient number, since it is larger than the sum of its proper divisors (73776435).

221120013 is a wasteful number, since it uses less digits than its factorization.

221120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 221120013 is about 14870.1046734715. The cubic root of 221120013 is about 604.7037804950.

Adding to 221120013 its reverse (310021122), we get a palindrome (531141135).

The spelling of 221120013 in words is "two hundred twenty-one million, one hundred twenty thousand, thirteen".