211533442023 has 4 divisors (see below), whose sum is σ = 282044589368. Its totient is φ = 141022294680.

The previous prime is 211533441997. The next prime is 211533442031. The reversal of 211533442023 is 320244335112.

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

It is not a de Polignac number, because 211533442023 - 2²⁹ = 210996571111 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 (211533442073) 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, 35255573668 + ... + 35255573673.

It is an arithmetic number, because the mean of its divisors is an integer number (70511147342).

Almost surely, 2^211533442023 is an apocalyptic number.

211533442023 is a deficient number, since it is larger than the sum of its proper divisors (70511147345).

211533442023 is an equidigital number, since it uses as much as digits as its factorization.

211533442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70511147344.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 211533442023 its reverse (320244335112), we get a palindrome (531777777135).

The spelling of 211533442023 in words is "two hundred eleven billion, five hundred thirty-three million, four hundred forty-two thousand, twenty-three".