243621022401 has 12 divisors (see below), whose sum is σ = 353447242512. Its totient is φ = 161698533336.

The previous prime is 243621022321. The next prime is 243621022417. The reversal of 243621022401 is 104220126342.

243621022401 is a `hidden beast` number, since 2 + 43 + 6 + 210 + 2 + 2 + 401 = 666.

243621022401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243621022401 - 2¹¹ = 243621020353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243621022471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59621311 + ... + 59625396.

It is an arithmetic number, because the mean of its divisors is an integer number (29453936876).

Almost surely, 2^243621022401 is an apocalyptic number.

It is an amenable number.

243621022401 is a deficient number, since it is larger than the sum of its proper divisors (109826220111).

243621022401 is a wasteful number, since it uses less digits than its factorization.

243621022401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119246940 (or 119246937 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 243621022401 its reverse (104220126342), we get a palindrome (347841148743).

The spelling of 243621022401 in words is "two hundred forty-three billion, six hundred twenty-one million, twenty-two thousand, four hundred one".