133444423331121 has 16 divisors (see below), whose sum is σ = 203856084401024. Its totient is φ = 76061880728064.

The previous prime is 133444423331081. The next prime is 133444423331129. The reversal of 133444423331121 is 121133324444331.

It is not a de Polignac number, because 133444423331121 - 2¹¹ = 133444423329073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133444423331121.

It is not an unprimeable number, because it can be changed into a prime (133444423331129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8003135680 + ... + 8003152353.

It is an arithmetic number, because the mean of its divisors is an integer number (12741005275064).

Almost surely, 2^{133444423331121} is an apocalyptic number.

It is an amenable number.

133444423331121 is a deficient number, since it is larger than the sum of its proper divisors (70411661069903).

133444423331121 is a wasteful number, since it uses less digits than its factorization.

133444423331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16006288440.

The product of its digits is 248832, while the sum is 39.

Adding to 133444423331121 its reverse (121133324444331), we get a palindrome (254577747775452).

The spelling of 133444423331121 in words is "one hundred thirty-three trillion, four hundred forty-four billion, four hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-one".