230221233121133 has 4 divisors (see below), whose sum is σ = 230221271867388. Its totient is φ = 230221194374880.

The previous prime is 230221233121097. The next prime is 230221233121147. The reversal of 230221233121133 is 331121332122032.

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 124399625357764 + 105821607763369 = 11153458^2 + 10286963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230221233121133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 230221233121096 and 230221233121105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230221263121133) 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, 8381858 + ... + 23036883.

It is an arithmetic number, because the mean of its divisors is an integer number (57555317966847).

Almost surely, 2^{230221233121133} is an apocalyptic number.

It is an amenable number.

230221233121133 is a deficient number, since it is larger than the sum of its proper divisors (38746255).

230221233121133 is an equidigital number, since it uses as much as digits as its factorization.

230221233121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38746254.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 230221233121133 its reverse (331121332122032), we get a palindrome (561342565243165).

The spelling of 230221233121133 in words is "two hundred thirty trillion, two hundred twenty-one billion, two hundred thirty-three million, one hundred twenty-one thousand, one hundred thirty-three".