211202204423 has 4 divisors (see below), whose sum is σ = 241373947920. Its totient is φ = 181030460928.

The previous prime is 211202204407. The next prime is 211202204429. The reversal of 211202204423 is 324402202112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211202204423 - 2⁴ = 211202204407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202204429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15085871738 + ... + 15085871751.

It is an arithmetic number, because the mean of its divisors is an integer number (60343486980).

Almost surely, 2^211202204423 is an apocalyptic number.

211202204423 is a deficient number, since it is larger than the sum of its proper divisors (30171743497).

211202204423 is an equidigital number, since it uses as much as digits as its factorization.

211202204423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171743496.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 211202204423 its reverse (324402202112), we get a palindrome (535604406535).

The spelling of 211202204423 in words is "two hundred eleven billion, two hundred two million, two hundred four thousand, four hundred twenty-three".