133221411 has 24 divisors (see below), whose sum is σ = 195197184. Its totient is φ = 87548400.

The previous prime is 133221409. The next prime is 133221427. The reversal of 133221411 is 114122331.

133221411 is a `hidden beast` number, since 1 + 33 + 221 + 411 = 666.

It is not a de Polignac number, because 133221411 - 2¹ = 133221409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133221461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226660 + ... + 227246.

It is an arithmetic number, because the mean of its divisors is an integer number (8133216).

Almost surely, 2^133221411 is an apocalyptic number.

133221411 is a deficient number, since it is larger than the sum of its proper divisors (61975773).

133221411 is a wasteful number, since it uses less digits than its factorization.

133221411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911 (or 908 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 133221411 is about 11542.1579871357. The cubic root of 133221411 is about 510.7299696806.

Adding to 133221411 its reverse (114122331), we get a palindrome (247343742).

The spelling of 133221411 in words is "one hundred thirty-three million, two hundred twenty-one thousand, four hundred eleven".