221443213113 has 12 divisors (see below), whose sum is σ = 323911311360. Its totient is φ = 145760089176.

The previous prime is 221443213091. The next prime is 221443213133. The reversal of 221443213113 is 311312344122.

221443213113 is a `hidden beast` number, since 2 + 2 + 1 + 443 + 213 + 1 + 1 + 3 = 666.

It is not a de Polignac number, because 221443213113 - 2⁵ = 221443213081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221443213133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155725881 + ... + 155727302.

It is an arithmetic number, because the mean of its divisors is an integer number (26992609280).

Almost surely, 2^221443213113 is an apocalyptic number.

It is an amenable number.

221443213113 is a deficient number, since it is larger than the sum of its proper divisors (102468098247).

221443213113 is a wasteful number, since it uses less digits than its factorization.

221443213113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311453268 (or 311453265 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 221443213113 its reverse (311312344122), we get a palindrome (532755557235).

The spelling of 221443213113 in words is "two hundred twenty-one billion, four hundred forty-three million, two hundred thirteen thousand, one hundred thirteen".