211432223401 has 4 divisors (see below), whose sum is σ = 241636826752. Its totient is φ = 181227620052.

The previous prime is 211432223381. The next prime is 211432223417. The reversal of 211432223401 is 104322234112.

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 211432223401 - 2²¹ = 211430126249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211432221401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15102301665 + ... + 15102301678.

It is an arithmetic number, because the mean of its divisors is an integer number (60409206688).

Almost surely, 2^211432223401 is an apocalyptic number.

It is an amenable number.

211432223401 is a deficient number, since it is larger than the sum of its proper divisors (30204603351).

211432223401 is an equidigital number, since it uses as much as digits as its factorization.

211432223401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30204603350.

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

Adding to 211432223401 its reverse (104322234112), we get a palindrome (315754457513).

The spelling of 211432223401 in words is "two hundred eleven billion, four hundred thirty-two million, two hundred twenty-three thousand, four hundred one".