233230030021 has 2 divisors, whose sum is σ = 233230030022. Its totient is φ = 233230030020.

The previous prime is 233230030009. The next prime is 233230030037. The reversal of 233230030021 is 120030032332.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166929444900 + 66300585121 = 408570^2 + 257489^2 .

It is a cyclic number.

It is not a de Polignac number, because 233230030021 - 2¹⁷ = 233229898949 is a prime.

It is a super-2 number, since 2×233230030021² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233230030721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116615015010 + 116615015011.

It is an arithmetic number, because the mean of its divisors is an integer number (116615015011).

Almost surely, 2^233230030021 is an apocalyptic number.

It is an amenable number.

233230030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233230030021 is an equidigital number, since it uses as much as digits as its factorization.

233230030021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 233230030021 its reverse (120030032332), we get a palindrome (353260062353).

The spelling of 233230030021 in words is "two hundred thirty-three billion, two hundred thirty million, thirty thousand, twenty-one".