243401220200233 has 2 divisors, whose sum is σ = 243401220200234. Its totient is φ = 243401220200232.

The previous prime is 243401220200183. The next prime is 243401220200273. The reversal of 243401220200233 is 332002022104342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149039365916224 + 94361854284009 = 12208168^2 + 9714003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243401220200233 is a prime.

It is a super-2 number, since 2×243401220200233² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243401220200273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121700610100116 + 121700610100117.

It is an arithmetic number, because the mean of its divisors is an integer number (121700610100117).

Almost surely, 2^{243401220200233} is an apocalyptic number.

It is an amenable number.

243401220200233 is a deficient number, since it is larger than the sum of its proper divisors (1).

243401220200233 is an equidigital number, since it uses as much as digits as its factorization.

243401220200233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 243401220200233 its reverse (332002022104342), we get a palindrome (575403242304575).

The spelling of 243401220200233 in words is "two hundred forty-three trillion, four hundred one billion, two hundred twenty million, two hundred thousand, two hundred thirty-three".