233433392921 has 2 divisors, whose sum is σ = 233433392922. Its totient is φ = 233433392920.

The previous prime is 233433392869. The next prime is 233433392939. The reversal of 233433392921 is 129293334332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186490104025 + 46943288896 = 431845^2 + 216664^2 .

It is a cyclic number.

It is not a de Polignac number, because 233433392921 - 2¹⁰ = 233433391897 is a prime.

It is a super-2 number, since 2×233433392921² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (233433392021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116716696460 + 116716696461.

It is an arithmetic number, because the mean of its divisors is an integer number (116716696461).

Almost surely, 2^233433392921 is an apocalyptic number.

It is an amenable number.

233433392921 is a deficient number, since it is larger than the sum of its proper divisors (1).

233433392921 is an equidigital number, since it uses as much as digits as its factorization.

233433392921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 44.

The spelling of 233433392921 in words is "two hundred thirty-three billion, four hundred thirty-three million, three hundred ninety-two thousand, nine hundred twenty-one".