133212223123 has 4 divisors (see below), whose sum is σ = 152242540720. Its totient is φ = 114181905528.

The previous prime is 133212223117. The next prime is 133212223127. The reversal of 133212223123 is 321322212331.

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 133212223123 - 2²⁵ = 133178668691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133212223127) 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, 9515158788 + ... + 9515158801.

It is an arithmetic number, because the mean of its divisors is an integer number (38060635180).

Almost surely, 2^133212223123 is an apocalyptic number.

133212223123 is a deficient number, since it is larger than the sum of its proper divisors (19030317597).

133212223123 is an equidigital number, since it uses as much as digits as its factorization.

133212223123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19030317596.

The product of its digits is 2592, while the sum is 25.

Adding to 133212223123 its reverse (321322212331), we get a palindrome (454534435454).

The spelling of 133212223123 in words is "one hundred thirty-three billion, two hundred twelve million, two hundred twenty-three thousand, one hundred twenty-three".