401442211 has 2 divisors, whose sum is σ = 401442212. Its totient is φ = 401442210.

The previous prime is 401442187. The next prime is 401442227. The reversal of 401442211 is 112244104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401442211 - 2¹¹ = 401440163 is a prime.

It is a super-2 number, since 2×401442211² = 322311697545137042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401442011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200721105 + 200721106.

It is an arithmetic number, because the mean of its divisors is an integer number (200721106).

Almost surely, 2^401442211 is an apocalyptic number.

401442211 is a deficient number, since it is larger than the sum of its proper divisors (1).

401442211 is an equidigital number, since it uses as much as digits as its factorization.

401442211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 401442211 is about 20036.0228338860. The cubic root of 401442211 is about 737.6907627183.

Adding to 401442211 its reverse (112244104), we get a palindrome (513686315).

It can be divided in two parts, 4014 and 42211, that added together give a square (46225 = 215²).

The spelling of 401442211 in words is "four hundred one million, four hundred forty-two thousand, two hundred eleven".