233130221321 has 16 divisors (see below), whose sum is σ = 246246998400. Its totient is φ = 220401084288.

The previous prime is 233130221251. The next prime is 233130221339. The reversal of 233130221321 is 123122031332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233130221321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233130221371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172631 + ... + 704316.

It is an arithmetic number, because the mean of its divisors is an integer number (15390437400).

Almost surely, 2^233130221321 is an apocalyptic number.

It is an amenable number.

233130221321 is a deficient number, since it is larger than the sum of its proper divisors (13116777079).

233130221321 is a wasteful number, since it uses less digits than its factorization.

233130221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877168.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 233130221321 its reverse (123122031332), we get a palindrome (356252252653).

The spelling of 233130221321 in words is "two hundred thirty-three billion, one hundred thirty million, two hundred twenty-one thousand, three hundred twenty-one".