212021023223 has 2 divisors, whose sum is σ = 212021023224. Its totient is φ = 212021023222.

The previous prime is 212021023217. The next prime is 212021023271. The reversal of 212021023223 is 322320120212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212021023223 - 2¹⁴ = 212021006839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021023195 and 212021023204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021028223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010511611 + 106010511612.

It is an arithmetic number, because the mean of its divisors is an integer number (106010511612).

Almost surely, 2^212021023223 is an apocalyptic number.

212021023223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021023223 is an equidigital number, since it uses as much as digits as its factorization.

212021023223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212021023223 its reverse (322320120212), we get a palindrome (534341143435).

The spelling of 212021023223 in words is "two hundred twelve billion, twenty-one million, twenty-three thousand, two hundred twenty-three".