204211112401 has 2 divisors, whose sum is σ = 204211112402. Its totient is φ = 204211112400.

The previous prime is 204211112393. The next prime is 204211112419. The reversal of 204211112401 is 104211112402.

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., 169270530625 + 34940581776 = 411425^2 + 186924^2 .

It is a cyclic number.

It is not a de Polignac number, because 204211112401 - 2³ = 204211112393 is a prime.

It is not a weakly prime, because it can be changed into another prime (204211112461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102105556200 + 102105556201.

It is an arithmetic number, because the mean of its divisors is an integer number (102105556201).

Almost surely, 2^204211112401 is an apocalyptic number.

It is an amenable number.

204211112401 is a deficient number, since it is larger than the sum of its proper divisors (1).

204211112401 is an equidigital number, since it uses as much as digits as its factorization.

204211112401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 204211112401 its reverse (104211112402), we get a palindrome (308422224803).

Subtracting from 204211112401 its reverse (104211112402), we obtain a palindrome (99999999999).

The spelling of 204211112401 in words is "two hundred four billion, two hundred eleven million, one hundred twelve thousand, four hundred one".