221003120113 has 4 divisors (see below), whose sum is σ = 221246784880. Its totient is φ = 220759455348.

The previous prime is 221003120111. The next prime is 221003120203. The reversal of 221003120113 is 311021300122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221003120113 - 2¹ = 221003120111 is a prime.

It is a super-2 number, since 2×221003120113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221003120111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121831023 + ... + 121832836.

It is an arithmetic number, because the mean of its divisors is an integer number (55311696220).

Almost surely, 2^221003120113 is an apocalyptic number.

It is an amenable number.

221003120113 is a deficient number, since it is larger than the sum of its proper divisors (243664767).

221003120113 is an equidigital number, since it uses as much as digits as its factorization.

221003120113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243664766.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221003120113 its reverse (311021300122), we get a palindrome (532024420235).

The spelling of 221003120113 in words is "two hundred twenty-one billion, three million, one hundred twenty thousand, one hundred thirteen".