133220123 has 2 divisors, whose sum is σ = 133220124. Its totient is φ = 133220122.

The previous prime is 133220093. The next prime is 133220147. The reversal of 133220123 is 321022331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133220123 is a prime.

It is a super-3 number, since 3×133220123³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (133220173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66610061 + 66610062.

It is an arithmetic number, because the mean of its divisors is an integer number (66610062).

Almost surely, 2^133220123 is an apocalyptic number.

133220123 is a deficient number, since it is larger than the sum of its proper divisors (1).

133220123 is an equidigital number, since it uses as much as digits as its factorization.

133220123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 133220123 is about 11542.1021915421. The cubic root of 133220123 is about 510.7283237432.

Adding to 133220123 its reverse (321022331), we get a palindrome (454242454).

The spelling of 133220123 in words is "one hundred thirty-three million, two hundred twenty thousand, one hundred twenty-three".