211434203401 has 4 divisors (see below), whose sum is σ = 211691110912. Its totient is φ = 211177295892.

The previous prime is 211434203353. The next prime is 211434203413. The reversal of 211434203401 is 104302434112.

211434203401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211434203401 - 2²⁵ = 211400648969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211434203441) 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 in 3 ways as a sum of consecutive naturals, for example, 128452521 + ... + 128454166.

It is an arithmetic number, because the mean of its divisors is an integer number (52922777728).

Almost surely, 2^211434203401 is an apocalyptic number.

It is an amenable number.

211434203401 is a deficient number, since it is larger than the sum of its proper divisors (256907511).

211434203401 is an equidigital number, since it uses as much as digits as its factorization.

211434203401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256907510.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211434203401 its reverse (104302434112), we get a palindrome (315736637513).

The spelling of 211434203401 in words is "two hundred eleven billion, four hundred thirty-four million, two hundred three thousand, four hundred one".