211421023333 has 4 divisors (see below), whose sum is σ = 227684178988. Its totient is φ = 195157867680.

The previous prime is 211421023321. The next prime is 211421023343. The reversal of 211421023333 is 333320124112.

211421023333 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.

It can be written as a sum of positive squares in 2 ways, for example, as 60467793604 + 150953229729 = 245902^2 + 388527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211421023333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211421023298 and 211421023307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211421023313) 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, 8131577808 + ... + 8131577833.

It is an arithmetic number, because the mean of its divisors is an integer number (56921044747).

Almost surely, 2^211421023333 is an apocalyptic number.

It is an amenable number.

211421023333 is a deficient number, since it is larger than the sum of its proper divisors (16263155655).

211421023333 is a wasteful number, since it uses less digits than its factorization.

211421023333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16263155654.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 211421023333 its reverse (333320124112), we get a palindrome (544741147445).

The spelling of 211421023333 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-three thousand, three hundred thirty-three".