221232130033 has 4 divisors (see below), whose sum is σ = 221570924148. Its totient is φ = 220893335920.

The previous prime is 221232130001. The next prime is 221232130039. The reversal of 221232130033 is 330031232122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21801113104 + 199431016929 = 147652^2 + 446577^2 .

It is a cyclic number.

It is not a de Polignac number, because 221232130033 - 2⁵ = 221232130001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221232129986 and 221232130013.

It is not an unprimeable number, because it can be changed into a prime (221232130039) 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, 169396078 + ... + 169397383.

It is an arithmetic number, because the mean of its divisors is an integer number (55392731037).

Almost surely, 2^221232130033 is an apocalyptic number.

It is an amenable number.

221232130033 is a deficient number, since it is larger than the sum of its proper divisors (338794115).

221232130033 is an equidigital number, since it uses as much as digits as its factorization.

221232130033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338794114.

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

Adding to 221232130033 its reverse (330031232122), we get a palindrome (551263362155).

The spelling of 221232130033 in words is "two hundred twenty-one billion, two hundred thirty-two million, one hundred thirty thousand, thirty-three".