212221233021023 has 4 divisors (see below), whose sum is σ = 212237915781408. Its totient is φ = 212204550260640.

The previous prime is 212221233020989. The next prime is 212221233021047. The reversal of 212221233021023 is 320120332122212.

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 212221233021023 - 2³⁶ = 212152513544287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212221233020983 and 212221233021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221233024023) 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, 8341361111 + ... + 8341386552.

It is an arithmetic number, because the mean of its divisors is an integer number (53059478945352).

Almost surely, 2^{212221233021023} is an apocalyptic number.

212221233021023 is a deficient number, since it is larger than the sum of its proper divisors (16682760385).

212221233021023 is a wasteful number, since it uses less digits than its factorization.

212221233021023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16682760384.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 212221233021023 its reverse (320120332122212), we get a palindrome (532341565143235).

The spelling of 212221233021023 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred thirty-three million, twenty-one thousand, twenty-three".