400424440211 has 2 divisors, whose sum is σ = 400424440212. Its totient is φ = 400424440210.

The previous prime is 400424440183. The next prime is 400424440217. The reversal of 400424440211 is 112044424004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400424440211 - 2¹⁰ = 400424439187 is a prime.

It is not a weakly prime, because it can be changed into another prime (400424440217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200212220105 + 200212220106.

It is an arithmetic number, because the mean of its divisors is an integer number (200212220106).

Almost surely, 2^400424440211 is an apocalyptic number.

400424440211 is a deficient number, since it is larger than the sum of its proper divisors (1).

400424440211 is an equidigital number, since it uses as much as digits as its factorization.

400424440211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 400424440211 its reverse (112044424004), we get a palindrome (512468864215).

The spelling of 400424440211 in words is "four hundred billion, four hundred twenty-four million, four hundred forty thousand, two hundred eleven".