210120310223 has 4 divisors (see below), whose sum is σ = 210121542888. Its totient is φ = 210119077560.

The previous prime is 210120310207. The next prime is 210120310247. The reversal of 210120310223 is 322013021012.

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 210120310223 - 2⁴ = 210120310207 is a prime.

It is a super-4 number, since 4×210120310223⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210120310423) 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, 309836 + ... + 718497.

It is an arithmetic number, because the mean of its divisors is an integer number (52530385722).

Almost surely, 2^210120310223 is an apocalyptic number.

210120310223 is a deficient number, since it is larger than the sum of its proper divisors (1232665).

210120310223 is a wasteful number, since it uses less digits than its factorization.

210120310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232664.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 210120310223 its reverse (322013021012), we get a palindrome (532133331235).

The spelling of 210120310223 in words is "two hundred ten billion, one hundred twenty million, three hundred ten thousand, two hundred twenty-three".