221220303113 has 8 divisors (see below), whose sum is σ = 222191499816. Its totient is φ = 220249292800.

The previous prime is 221220303053. The next prime is 221220303149. The reversal of 221220303113 is 311303022122.

It can be written as a sum of positive squares in 4 ways, for example, as 58914454729 + 162305848384 = 242723^2 + 402872^2 .

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 221220303113 - 2³⁰ = 220146561289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221220303413) 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, 2681033 + ... + 2762313.

It is an arithmetic number, because the mean of its divisors is an integer number (27773937477).

Almost surely, 2^221220303113 is an apocalyptic number.

It is an amenable number.

221220303113 is a deficient number, since it is larger than the sum of its proper divisors (971196703).

221220303113 is a wasteful number, since it uses less digits than its factorization.

221220303113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93195.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 221220303113 its reverse (311303022122), we get a palindrome (532523325235).

The spelling of 221220303113 in words is "two hundred twenty-one billion, two hundred twenty million, three hundred three thousand, one hundred thirteen".