133220100 has 72 divisors (see below), whose sum is σ = 415112320. Its totient is φ = 32791680.

The previous prime is 133220093. The next prime is 133220123. The reversal of 133220100 is 1022331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13180 + ... + 20979.

Almost surely, 2^133220100 is an apocalyptic number.

133220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133220100 is an abundant number, since it is smaller than the sum of its proper divisors (281892220).

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

133220100 is a wasteful number, since it uses less digits than its factorization.

133220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34189 (or 34182 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 133220100 is about 11542.1011951897. The cubic root of 133220100 is about 510.7282943513.

Adding to 133220100 its reverse (1022331), we get a palindrome (134242431).

The spelling of 133220100 in words is "one hundred thirty-three million, two hundred twenty thousand, one hundred".