133220214 has 20 divisors (see below), whose sum is σ = 298512324. Its totient is φ = 44406684.

The previous prime is 133220189. The next prime is 133220249. The reversal of 133220214 is 412022331.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 411012 + ... + 411335.

Almost surely, 2^133220214 is an apocalyptic number.

133220214 is an abundant number, since it is smaller than the sum of its proper divisors (165292110).

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

133220214 is an equidigital number, since it uses as much as digits as its factorization.

133220214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822361 (or 822352 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 133220214 is about 11542.1061336309. The cubic root of 133220214 is about 510.7284400326.

Adding to 133220214 its reverse (412022331), we get a palindrome (545242545).

The spelling of 133220214 in words is "one hundred thirty-three million, two hundred twenty thousand, two hundred fourteen".