210133223123 has 4 divisors (see below), whose sum is σ = 210135645720. Its totient is φ = 210130800528.

The previous prime is 210133223089. The next prime is 210133223129. The reversal of 210133223123 is 321322331012.

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 210133223123 - 2⁸ = 210133222867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210133223129) 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, 1076165 + ... + 1256342.

It is an arithmetic number, because the mean of its divisors is an integer number (52533911430).

Almost surely, 2^210133223123 is an apocalyptic number.

210133223123 is a deficient number, since it is larger than the sum of its proper divisors (2422597).

210133223123 is an equidigital number, since it uses as much as digits as its factorization.

210133223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422596.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 210133223123 its reverse (321322331012), we get a palindrome (531455554135).

The spelling of 210133223123 in words is "two hundred ten billion, one hundred thirty-three million, two hundred twenty-three thousand, one hundred twenty-three".