133222404 has 96 divisors (see below), whose sum is σ = 389249280. Its totient is φ = 34578432.

The previous prime is 133222403. The next prime is 133222429. The reversal of 133222404 is 404222331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (133222403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39804 + ... + 43020.

It is an arithmetic number, because the mean of its divisors is an integer number (4054680).

Almost surely, 2^133222404 is an apocalyptic number.

133222404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133222404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194624640).

133222404 is an abundant number, since it is smaller than the sum of its proper divisors (256026876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133222404 is a wasteful number, since it uses less digits than its factorization.

133222404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277 (or 3275 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 133222404 is about 11542.2010032749. The cubic root of 133222404 is about 510.7312386298.

Adding to 133222404 its reverse (404222331), we get a palindrome (537444735).

The spelling of 133222404 in words is "one hundred thirty-three million, two hundred twenty-two thousand, four hundred four".