133341021 has 24 divisors (see below), whose sum is σ = 214591104. Its totient is φ = 79090560.

The previous prime is 133341011. The next prime is 133341029. The reversal of 133341021 is 120143331.

It is a de Polignac number, because none of the positive numbers 2^k-133341021 is a prime.

It is a super-3 number, since 3×133341021³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 133340985 and 133341003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133341029) 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 23 ways as a sum of consecutive naturals, for example, 9676 + ... + 18981.

It is an arithmetic number, because the mean of its divisors is an integer number (8941296).

Almost surely, 2^133341021 is an apocalyptic number.

133341021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133341021 is a deficient number, since it is larger than the sum of its proper divisors (81250083).

133341021 is a wasteful number, since it uses less digits than its factorization.

133341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28721 (or 28718 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133341021 is about 11547.3382647258. The cubic root of 133341021 is about 510.8827732928.

Adding to 133341021 its reverse (120143331), we get a palindrome (253484352).

The spelling of 133341021 in words is "one hundred thirty-three million, three hundred forty-one thousand, twenty-one".