133132233121 has 4 divisors (see below), whose sum is σ = 133489156372. Its totient is φ = 132775309872.

The previous prime is 133132233107. The next prime is 133132233137. The reversal of 133132233121 is 121332231331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 91336928400 + 41795304721 = 302220^2 + 204439^2 .

It is a cyclic number.

It is not a de Polignac number, because 133132233121 - 2¹⁵ = 133132200353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133132233821) 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, 178461066 + ... + 178461811.

It is an arithmetic number, because the mean of its divisors is an integer number (33372289093).

Almost surely, 2^133132233121 is an apocalyptic number.

It is an amenable number.

133132233121 is a deficient number, since it is larger than the sum of its proper divisors (356923251).

133132233121 is an equidigital number, since it uses as much as digits as its factorization.

133132233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356923250.

The product of its digits is 1944, while the sum is 25.

Adding to 133132233121 its reverse (121332231331), we get a palindrome (254464464452).

The spelling of 133132233121 in words is "one hundred thirty-three billion, one hundred thirty-two million, two hundred thirty-three thousand, one hundred twenty-one".