210101223 has 4 divisors (see below), whose sum is σ = 280134968. Its totient is φ = 140067480.

The previous prime is 210101189. The next prime is 210101273. The reversal of 210101223 is 322101012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 210101223 - 2¹⁴ = 210084839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210101199 and 210101208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101273) 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, 35016868 + ... + 35016873.

It is an arithmetic number, because the mean of its divisors is an integer number (70033742).

Almost surely, 2^210101223 is an apocalyptic number.

210101223 is a deficient number, since it is larger than the sum of its proper divisors (70033745).

210101223 is an equidigital number, since it uses as much as digits as its factorization.

210101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70033744.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 210101223 is about 14494.8688507347. The cubic root of 210101223 is about 594.4876817791.

Adding to 210101223 its reverse (322101012), we get a palindrome (532202235).

The spelling of 210101223 in words is "two hundred ten million, one hundred one thousand, two hundred twenty-three".