133121033 has 16 divisors (see below), whose sum is σ = 147692160. Its totient is φ = 119344896.

The previous prime is 133121029. The next prime is 133121039. The reversal of 133121033 is 330121331.

It is not a de Polignac number, because 133121033 - 2² = 133121029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133121039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119483 + ... + 120591.

It is an arithmetic number, because the mean of its divisors is an integer number (9230760).

Almost surely, 2^133121033 is an apocalyptic number.

It is an amenable number.

133121033 is a deficient number, since it is larger than the sum of its proper divisors (14571127).

133121033 is a wasteful number, since it uses less digits than its factorization.

133121033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133121033 is about 11537.8088474372. The cubic root of 133121033 is about 510.6016646439.

Adding to 133121033 its reverse (330121331), we get a palindrome (463242364).

The spelling of 133121033 in words is "one hundred thirty-three million, one hundred twenty-one thousand, thirty-three".