221013330331 has 4 divisors (see below), whose sum is σ = 221014380952. Its totient is φ = 221012279712.

The previous prime is 221013330283. The next prime is 221013330337. The reversal of 221013330331 is 133033310122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 133033310122 = 2 ⋅66516655061.

It is a cyclic number.

It is not a de Polignac number, because 221013330331 - 2¹³ = 221013322139 is a prime.

It is a super-2 number, since 2×221013330331² (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 (221013330337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88926 + ... + 670771.

It is an arithmetic number, because the mean of its divisors is an integer number (55253595238).

Almost surely, 2^221013330331 is an apocalyptic number.

221013330331 is a deficient number, since it is larger than the sum of its proper divisors (1050621).

221013330331 is an equidigital number, since it uses as much as digits as its factorization.

221013330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050620.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 221013330331 its reverse (133033310122), we get a palindrome (354046640453).

The spelling of 221013330331 in words is "two hundred twenty-one billion, thirteen million, three hundred thirty thousand, three hundred thirty-one".