221211430113 has 4 divisors (see below), whose sum is σ = 294948573488. Its totient is φ = 147474286740.

The previous prime is 221211430081. The next prime is 221211430127. The reversal of 221211430113 is 311034112122.

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 not a de Polignac number, because 221211430113 - 2⁵ = 221211430081 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221211430113.

It is not an unprimeable number, because it can be changed into a prime (221211434113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36868571683 + ... + 36868571688.

It is an arithmetic number, because the mean of its divisors is an integer number (73737143372).

Almost surely, 2^221211430113 is an apocalyptic number.

It is an amenable number.

221211430113 is a deficient number, since it is larger than the sum of its proper divisors (73737143375).

221211430113 is an equidigital number, since it uses as much as digits as its factorization.

221211430113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73737143374.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221211430113 its reverse (311034112122), we get a palindrome (532245542235).

The spelling of 221211430113 in words is "two hundred twenty-one billion, two hundred eleven million, four hundred thirty thousand, one hundred thirteen".