133121412011 has 4 divisors (see below), whose sum is σ = 152138756592. Its totient is φ = 114104067432.

The previous prime is 133121412001. The next prime is 133121412023. The reversal of 133121412011 is 110214121331.

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-133121412011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133121412001) 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, 9508672280 + ... + 9508672293.

It is an arithmetic number, because the mean of its divisors is an integer number (38034689148).

Almost surely, 2^133121412011 is an apocalyptic number.

133121412011 is a deficient number, since it is larger than the sum of its proper divisors (19017344581).

133121412011 is an equidigital number, since it uses as much as digits as its factorization.

133121412011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19017344580.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 133121412011 its reverse (110214121331), we get a palindrome (243335533342).

The spelling of 133121412011 in words is "one hundred thirty-three billion, one hundred twenty-one million, four hundred twelve thousand, eleven".