210221010211223 has 16 divisors (see below), whose sum is σ = 229422082319136. Its totient is φ = 191034961328640.

The previous prime is 210221010211207. The next prime is 210221010211291. The reversal of 210221010211223 is 322112010122012.

It is not a de Polignac number, because 210221010211223 - 2⁴ = 210221010211207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210221010211195 and 210221010211204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210229010211223) 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, 378749915 + ... + 379304547.

It is an arithmetic number, because the mean of its divisors is an integer number (14338880144946).

Almost surely, 2^{210221010211223} is an apocalyptic number.

210221010211223 is a deficient number, since it is larger than the sum of its proper divisors (19201072107913).

210221010211223 is a wasteful number, since it uses less digits than its factorization.

210221010211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568114.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 210221010211223 its reverse (322112010122012), we get a palindrome (532333020333235).

The spelling of 210221010211223 in words is "two hundred ten trillion, two hundred twenty-one billion, ten million, two hundred eleven thousand, two hundred twenty-three".