133301021 has 12 divisors (see below), whose sum is σ = 155289888. Its totient is φ = 114091992.

The previous prime is 133301011. The next prime is 133301053. The reversal of 133301021 is 120103331.

It is not a de Polignac number, because 133301021 - 2⁶ = 133300957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133300987 and 133301005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133301011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41930 + ... + 44996.

It is an arithmetic number, because the mean of its divisors is an integer number (12940824).

Almost surely, 2^133301021 is an apocalyptic number.

It is an amenable number.

133301021 is a deficient number, since it is larger than the sum of its proper divisors (21988867).

133301021 is an equidigital number, since it uses as much as digits as its factorization.

133301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968 (or 3961 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133301021 is about 11545.6061339368. The cubic root of 133301021 is about 510.8316828518.

Adding to 133301021 its reverse (120103331), we get a palindrome (253404352).

The spelling of 133301021 in words is "one hundred thirty-three million, three hundred one thousand, twenty-one".