221243134113 has 6 divisors (see below), whose sum is σ = 319573415954. Its totient is φ = 147495422736.

The previous prime is 221243134103. The next prime is 221243134117. The reversal of 221243134113 is 311431342122.

221243134113 is a `hidden beast` number, since 2 + 2 + 1 + 243 + 1 + 3 + 411 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 220362647184 + 880486929 = 469428^2 + 29673^2 .

It is not a de Polignac number, because 221243134113 - 2¹⁷ = 221243003041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221243134117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12291285220 + ... + 12291285237.

Almost surely, 2^221243134113 is an apocalyptic number.

It is an amenable number.

221243134113 is a deficient number, since it is larger than the sum of its proper divisors (98330281841).

221243134113 is a wasteful number, since it uses less digits than its factorization.

221243134113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24582570463 (or 24582570460 counting only the distinct ones).

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

Adding to 221243134113 its reverse (311431342122), we get a palindrome (532674476235).

The spelling of 221243134113 in words is "two hundred twenty-one billion, two hundred forty-three million, one hundred thirty-four thousand, one hundred thirteen".