133013121 has 8 divisors (see below), whose sum is σ = 177429600. Its totient is φ = 88636032.

The previous prime is 133013119. The next prime is 133013137. The reversal of 133013121 is 121310331.

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

It is not a de Polignac number, because 133013121 - 2¹ = 133013119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133013121.

It is not an unprimeable number, because it can be changed into a prime (133013141) 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, 771 + ... + 16328.

It is an arithmetic number, because the mean of its divisors is an integer number (22178700).

Almost surely, 2^133013121 is an apocalyptic number.

It is an amenable number.

133013121 is a deficient number, since it is larger than the sum of its proper divisors (44416479).

133013121 is a wasteful number, since it uses less digits than its factorization.

133013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19695.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 133013121 is about 11533.1314481367. The cubic root of 133013121 is about 510.4636575464.

Adding to 133013121 its reverse (121310331), we get a palindrome (254323452).

The spelling of 133013121 in words is "one hundred thirty-three million, thirteen thousand, one hundred twenty-one".