133435143121 has 4 divisors (see below), whose sum is σ = 152497306432. Its totient is φ = 114372979812.

The previous prime is 133435143097. The next prime is 133435143137. The reversal of 133435143121 is 121341534331.

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 133435143121 - 2¹³ = 133435134929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133435143151) 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, 9531081645 + ... + 9531081658.

It is an arithmetic number, because the mean of its divisors is an integer number (38124326608).

Almost surely, 2^133435143121 is an apocalyptic number.

It is an amenable number.

133435143121 is a deficient number, since it is larger than the sum of its proper divisors (19062163311).

133435143121 is an equidigital number, since it uses as much as digits as its factorization.

133435143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19062163310.

The product of its digits is 12960, while the sum is 31.

Adding to 133435143121 its reverse (121341534331), we get a palindrome (254776677452).

The spelling of 133435143121 in words is "one hundred thirty-three billion, four hundred thirty-five million, one hundred forty-three thousand, one hundred twenty-one".