133012021 has 8 divisors (see below), whose sum is σ = 137116800. Its totient is φ = 128960448.

The previous prime is 133012007. The next prime is 133012031. The reversal of 133012021 is 120210331.

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 133012021 - 2¹¹ = 133009973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133011992 and 133012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133012001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8196 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (17139600).

Almost surely, 2^133012021 is an apocalyptic number.

It is an amenable number.

133012021 is a deficient number, since it is larger than the sum of its proper divisors (4104779).

133012021 is a wasteful number, since it uses less digits than its factorization.

133012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26603.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 133012021 is about 11533.0837593421. The cubic root of 133012021 is about 510.4622503881.

Adding to 133012021 its reverse (120210331), we get a palindrome (253222352).

The spelling of 133012021 in words is "one hundred thirty-three million, twelve thousand, twenty-one".