401212251211 has 2 divisors, whose sum is σ = 401212251212. Its totient is φ = 401212251210.

The previous prime is 401212251191. The next prime is 401212251221. The reversal of 401212251211 is 112152212104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401212251211 - 2¹⁷ = 401212120139 is a prime.

It is not a weakly prime, because it can be changed into another prime (401212251221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200606125605 + 200606125606.

It is an arithmetic number, because the mean of its divisors is an integer number (200606125606).

Almost surely, 2^401212251211 is an apocalyptic number.

401212251211 is a deficient number, since it is larger than the sum of its proper divisors (1).

401212251211 is an equidigital number, since it uses as much as digits as its factorization.

401212251211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 401212251211 its reverse (112152212104), we get a palindrome (513364463315).

The spelling of 401212251211 in words is "four hundred one billion, two hundred twelve million, two hundred fifty-one thousand, two hundred eleven".