210221202021023 has 2 divisors, whose sum is σ = 210221202021024. Its totient is φ = 210221202021022.

The previous prime is 210221202021013. The next prime is 210221202021079. The reversal of 210221202021023 is 320120202122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210221202021023 - 2²⁴ = 210221185243807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210221202020986 and 210221202021004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210221202021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110601010511 + 105110601010512.

It is an arithmetic number, because the mean of its divisors is an integer number (105110601010512).

Almost surely, 2^{210221202021023} is an apocalyptic number.

210221202021023 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221202021023 is an equidigital number, since it uses as much as digits as its factorization.

210221202021023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 210221202021023 its reverse (320120202122012), we get a palindrome (530341404143035).

The spelling of 210221202021023 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred two million, twenty-one thousand, twenty-three".