133122121321 has 4 divisors (see below), whose sum is σ = 152139567232. Its totient is φ = 114104675412.

The previous prime is 133122121309. The next prime is 133122121343. The reversal of 133122121321 is 123121221331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133122121321 - 2⁷ = 133122121193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133122121292 and 133122121301.

It is not an unprimeable number, because it can be changed into a prime (133123121321) 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, 9508722945 + ... + 9508722958.

It is an arithmetic number, because the mean of its divisors is an integer number (38034891808).

Almost surely, 2^133122121321 is an apocalyptic number.

It is an amenable number.

133122121321 is a deficient number, since it is larger than the sum of its proper divisors (19017445911).

133122121321 is an equidigital number, since it uses as much as digits as its factorization.

133122121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19017445910.

The product of its digits is 432, while the sum is 22.

Adding to 133122121321 its reverse (123121221331), we get a palindrome (256243342652).

The spelling of 133122121321 in words is "one hundred thirty-three billion, one hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-one".