133121108 has 12 divisors (see below), whose sum is σ = 237918912. Its totient is φ = 65144280.

The previous prime is 133121063. The next prime is 133121111. The reversal of 133121108 is 801121331.

It is a self number, because there is not a number n which added to its sum of digits gives 133121108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353858 + ... + 354233.

It is an arithmetic number, because the mean of its divisors is an integer number (19826576).

Almost surely, 2^133121108 is an apocalyptic number.

It is an amenable number.

133121108 is a deficient number, since it is larger than the sum of its proper divisors (104797804).

133121108 is a wasteful number, since it uses less digits than its factorization.

133121108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708142 (or 708140 counting only the distinct ones).

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

The square root of 133121108 is about 11537.8120976206. The cubic root of 133121108 is about 510.6017605344.

Adding to 133121108 its reverse (801121331), we get a palindrome (934242439).

The spelling of 133121108 in words is "one hundred thirty-three million, one hundred twenty-one thousand, one hundred eight".