211421110343 has 4 divisors (see below), whose sum is σ = 211425553080. Its totient is φ = 211416667608.

The previous prime is 211421110279. The next prime is 211421110349. The reversal of 211421110343 is 343011124112.

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 211421110343 - 2⁶ = 211421110279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421110349) 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, 2149205 + ... + 2245422.

It is an arithmetic number, because the mean of its divisors is an integer number (52856388270).

Almost surely, 2^211421110343 is an apocalyptic number.

211421110343 is a deficient number, since it is larger than the sum of its proper divisors (4442737).

211421110343 is an equidigital number, since it uses as much as digits as its factorization.

211421110343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442736.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211421110343 its reverse (343011124112), we get a palindrome (554432234455).

The spelling of 211421110343 in words is "two hundred eleven billion, four hundred twenty-one million, one hundred ten thousand, three hundred forty-three".