233212133221 has 2 divisors, whose sum is σ = 233212133222. Its totient is φ = 233212133220.

The previous prime is 233212133191. The next prime is 233212133227. The reversal of 233212133221 is 122331212332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144818302500 + 88393830721 = 380550^2 + 297311^2 .

It is a cyclic number.

It is not a de Polignac number, because 233212133221 - 2⁷ = 233212133093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233212133227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116606066610 + 116606066611.

It is an arithmetic number, because the mean of its divisors is an integer number (116606066611).

Almost surely, 2^233212133221 is an apocalyptic number.

It is an amenable number.

233212133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

233212133221 is an equidigital number, since it uses as much as digits as its factorization.

233212133221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

Adding to 233212133221 its reverse (122331212332), we get a palindrome (355543345553).

The spelling of 233212133221 in words is "two hundred thirty-three billion, two hundred twelve million, one hundred thirty-three thousand, two hundred twenty-one".