210664211023 has 16 divisors (see below), whose sum is σ = 243739376640. Its totient is φ = 178338701376.

The previous prime is 210664211011. The next prime is 210664211063. The reversal of 210664211023 is 320112466012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210664211023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210664210982 and 210664211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210664211063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361990 + ... + 743212.

It is an arithmetic number, because the mean of its divisors is an integer number (15233711040).

Almost surely, 2^210664211023 is an apocalyptic number.

210664211023 is a deficient number, since it is larger than the sum of its proper divisors (33075165617).

210664211023 is an equidigital number, since it uses as much as digits as its factorization.

210664211023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382206.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 210664211023 its reverse (320112466012), we get a palindrome (530776677035).

The spelling of 210664211023 in words is "two hundred ten billion, six hundred sixty-four million, two hundred eleven thousand, twenty-three".