11400420211 has 2 divisors, whose sum is σ = 11400420212. Its totient is φ = 11400420210.

The previous prime is 11400420203. The next prime is 11400420301. The reversal of 11400420211 is 11202400411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11400420211 - 2³ = 11400420203 is a prime.

It is not a weakly prime, because it can be changed into another prime (11400426211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700210105 + 5700210106.

It is an arithmetic number, because the mean of its divisors is an integer number (5700210106).

Almost surely, 2^11400420211 is an apocalyptic number.

11400420211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11400420211 is an equidigital number, since it uses as much as digits as its factorization.

11400420211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11400420211 its reverse (11202400411), we get a palindrome (22602820622).

The spelling of 11400420211 in words is "eleven billion, four hundred million, four hundred twenty thousand, two hundred eleven".