133021133 has 12 divisors (see below), whose sum is σ = 155030652. Its totient is φ = 113803200.

The previous prime is 133021099. The next prime is 133021153. The reversal of 133021133 is 331120331.

It can be written as a sum of positive squares in 2 ways, for example, as 43850884 + 89170249 = 6622^2 + 9443^2 .

It is not a de Polignac number, because 133021133 - 2¹² = 133017037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133021153) 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, 27191 + ... + 31707.

It is an arithmetic number, because the mean of its divisors is an integer number (12919221).

Almost surely, 2^133021133 is an apocalyptic number.

It is an amenable number.

133021133 is a deficient number, since it is larger than the sum of its proper divisors (22009519).

133021133 is an equidigital number, since it uses as much as digits as its factorization.

133021133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5132 (or 5125 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133021133 is about 11533.4787900269. The cubic root of 133021133 is about 510.4739065421.

Adding to 133021133 its reverse (331120331), we get a palindrome (464141464).

The spelling of 133021133 in words is "one hundred thirty-three million, twenty-one thousand, one hundred thirty-three".