401201611 has 2 divisors, whose sum is σ = 401201612. Its totient is φ = 401201610.

The previous prime is 401201609. The next prime is 401201629. The reversal of 401201611 is 116102104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401201611 - 2¹ = 401201609 is a prime.

Together with 401201609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (401201681) 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 as a sum of consecutive naturals, namely, 200600805 + 200600806.

It is an arithmetic number, because the mean of its divisors is an integer number (200600806).

Almost surely, 2^401201611 is an apocalyptic number.

401201611 is a deficient number, since it is larger than the sum of its proper divisors (1).

401201611 is an equidigital number, since it uses as much as digits as its factorization.

401201611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 401201611 is about 20030.0177483696. The cubic root of 401201611 is about 737.5433576348.

Adding to 401201611 its reverse (116102104), we get a palindrome (517303715).

The spelling of 401201611 in words is "four hundred one million, two hundred one thousand, six hundred eleven".