133220411 has 4 divisors (see below), whose sum is σ = 133296912. Its totient is φ = 133143912.

The previous prime is 133220383. The next prime is 133220413. The reversal of 133220411 is 114022331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114022331 = 631 ⋅180701.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133220411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133220411.

It is not an unprimeable number, because it can be changed into a prime (133220413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35576 + ... + 39141.

It is an arithmetic number, because the mean of its divisors is an integer number (33324228).

Almost surely, 2^133220411 is an apocalyptic number.

133220411 is a deficient number, since it is larger than the sum of its proper divisors (76501).

133220411 is an equidigital number, since it uses as much as digits as its factorization.

133220411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76500.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133220411 is about 11542.1146675988. The cubic root of 133220411 is about 510.7286917798.

Adding to 133220411 its reverse (114022331), we get a palindrome (247242742).

The spelling of 133220411 in words is "one hundred thirty-three million, two hundred twenty thousand, four hundred eleven".