133331113121 has 4 divisors (see below), whose sum is σ = 133903349892. Its totient is φ = 132758876352.

The previous prime is 133331113117. The next prime is 133331113141. The reversal of 133331113121 is 121311133331.

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 21363914896 + 111967198225 = 146164^2 + 334615^2 .

It is a cyclic number.

It is not a de Polignac number, because 133331113121 - 2² = 133331113117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133331113141) 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, 286118036 + ... + 286118501.

It is an arithmetic number, because the mean of its divisors is an integer number (33475837473).

Almost surely, 2^133331113121 is an apocalyptic number.

It is an amenable number.

133331113121 is a deficient number, since it is larger than the sum of its proper divisors (572236771).

133331113121 is an equidigital number, since it uses as much as digits as its factorization.

133331113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572236770.

The product of its digits is 486, while the sum is 23.

Adding to 133331113121 its reverse (121311133331), we get a palindrome (254642246452).

The spelling of 133331113121 in words is "one hundred thirty-three billion, three hundred thirty-one million, one hundred thirteen thousand, one hundred twenty-one".