233454502213021 has 2 divisors, whose sum is σ = 233454502213022. Its totient is φ = 233454502213020.

The previous prime is 233454502213019. The next prime is 233454502213043. The reversal of 233454502213021 is 120312205454332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206707617928900 + 26746884284121 = 14377330^2 + 5171739^2 .

It is a cyclic number.

It is not a de Polignac number, because 233454502213021 - 2¹ = 233454502213019 is a prime.

Together with 233454502213019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233454502213091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116727251106510 + 116727251106511.

It is an arithmetic number, because the mean of its divisors is an integer number (116727251106511).

Almost surely, 2^{233454502213021} is an apocalyptic number.

It is an amenable number.

233454502213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233454502213021 is an equidigital number, since it uses as much as digits as its factorization.

233454502213021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 233454502213021 its reverse (120312205454332), we get a palindrome (353766707667353).

The spelling of 233454502213021 in words is "two hundred thirty-three trillion, four hundred fifty-four billion, five hundred two million, two hundred thirteen thousand, twenty-one".