133021330 has 64 divisors (see below), whose sum is σ = 265845888. Its totient is φ = 47623680.

The previous prime is 133021321. The next prime is 133021373. The reversal of 133021330 is 33120331.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015365 + ... + 1015495.

It is an arithmetic number, because the mean of its divisors is an integer number (4153842).

Almost surely, 2^133021330 is an apocalyptic number.

133021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133021330 is a deficient number, since it is larger than the sum of its proper divisors (132824558).

133021330 is a wasteful number, since it uses less digits than its factorization.

133021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 133021330 is about 11533.4873303784. The cubic root of 133021330 is about 510.4741585405.

Adding to 133021330 its reverse (33120331), we get a palindrome (166141661).

Subtracting from 133021330 its reverse (33120331), we obtain a palindrome (99900999).

The spelling of 133021330 in words is "one hundred thirty-three million, twenty-one thousand, three hundred thirty".