221032023313 has 4 divisors (see below), whose sum is σ = 221036646628. Its totient is φ = 221027400000.

The previous prime is 221032023209. The next prime is 221032023343. The reversal of 221032023313 is 313320230122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313320230122 = 2 ⋅156660115061.

It can be written as a sum of positive squares in 2 ways, for example, as 117983319169 + 103048704144 = 343487^2 + 321012^2 .

It is a cyclic number.

It is not a de Polignac number, because 221032023313 - 2¹⁷ = 221031892241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221032023343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2239188 + ... + 2335813.

It is an arithmetic number, because the mean of its divisors is an integer number (55259161657).

Almost surely, 2^221032023313 is an apocalyptic number.

It is an amenable number.

221032023313 is a deficient number, since it is larger than the sum of its proper divisors (4623315).

221032023313 is an equidigital number, since it uses as much as digits as its factorization.

221032023313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623314.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 221032023313 its reverse (313320230122), we get a palindrome (534352253435).

The spelling of 221032023313 in words is "two hundred twenty-one billion, thirty-two million, twenty-three thousand, three hundred thirteen".