133600121 has 8 divisors (see below), whose sum is σ = 136303560. Its totient is φ = 130903552.

The previous prime is 133600091. The next prime is 133600151. The reversal of 133600121 is 121006331.

It is an interprime number because it is at equal distance from previous prime (133600091) and next prime (133600151).

It can be written as a sum of positive squares in 4 ways, for example, as 20475625 + 113124496 = 4525^2 + 10636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133600121 - 2⁶ = 133600057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133600121.

It is not an unprimeable number, because it can be changed into a prime (133600151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57641 + ... + 59913.

It is an arithmetic number, because the mean of its divisors is an integer number (17037945).

Almost surely, 2^133600121 is an apocalyptic number.

It is an amenable number.

133600121 is a deficient number, since it is larger than the sum of its proper divisors (2703439).

133600121 is a wasteful number, since it uses less digits than its factorization.

133600121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 133600121 is about 11558.5518556608. The cubic root of 133600121 is about 511.2134644296.

Adding to 133600121 its reverse (121006331), we get a palindrome (254606452).

The spelling of 133600121 in words is "one hundred thirty-three million, six hundred thousand, one hundred twenty-one".