133020121 has 32 divisors (see below), whose sum is σ = 162086400. Its totient is φ = 107827200.

The previous prime is 133020119. The next prime is 133020137. The reversal of 133020121 is 121020331.

It is not a de Polignac number, because 133020121 - 2¹ = 133020119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133020821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331521 + ... + 331921.

It is an arithmetic number, because the mean of its divisors is an integer number (5065200).

Almost surely, 2^133020121 is an apocalyptic number.

It is an amenable number.

133020121 is a deficient number, since it is larger than the sum of its proper divisors (29066279).

133020121 is a wasteful number, since it uses less digits than its factorization.

133020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529.

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

The square root of 133020121 is about 11533.4349176644. The cubic root of 133020121 is about 510.4726120087.

Adding to 133020121 its reverse (121020331), we get a palindrome (254040452).

The spelling of 133020121 in words is "one hundred thirty-three million, twenty thousand, one hundred twenty-one".