133132021 has 8 divisors (see below), whose sum is σ = 145577088. Its totient is φ = 120744000.

The previous prime is 133132003. The next prime is 133132033. The reversal of 133132021 is 120231331.

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 133132021 - 2¹¹ = 133129973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133131986 and 133132004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133132001) 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, 9300 + ... + 18781.

It is an arithmetic number, because the mean of its divisors is an integer number (18197136).

Almost surely, 2^133132021 is an apocalyptic number.

133132021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133132021 is a deficient number, since it is larger than the sum of its proper divisors (12445067).

133132021 is a wasteful number, since it uses less digits than its factorization.

133132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28523.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133132021 is about 11538.2850112138. The cubic root of 133132021 is about 510.6157128541.

Adding to 133132021 its reverse (120231331), we get a palindrome (253363352).

The spelling of 133132021 in words is "one hundred thirty-three million, one hundred thirty-two thousand, twenty-one".