133221301222123 has 4 divisors (see below), whose sum is σ = 133477004296008. Its totient is φ = 132965598148240.

The previous prime is 133221301222099. The next prime is 133221301222129. The reversal of 133221301222123 is 321222103122331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133221301222123 is a prime.

It is a super-2 number, since 2×133221301222123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133221301222091 and 133221301222100.

It is not an unprimeable number, because it can be changed into a prime (133221301222129) 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, 127851536161 + ... + 127851537202.

It is an arithmetic number, because the mean of its divisors is an integer number (33369251074002).

Almost surely, 2^{133221301222123} is an apocalyptic number.

133221301222123 is a deficient number, since it is larger than the sum of its proper divisors (255703073885).

133221301222123 is an equidigital number, since it uses as much as digits as its factorization.

133221301222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255703073884.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 133221301222123 its reverse (321222103122331), we get a palindrome (454443404344454).

The spelling of 133221301222123 in words is "one hundred thirty-three trillion, two hundred twenty-one billion, three hundred one million, two hundred twenty-two thousand, one hundred twenty-three".