133688222 has 4 divisors (see below), whose sum is σ = 200532336. Its totient is φ = 66844110.

The previous prime is 133688197. The next prime is 133688227. The reversal of 133688222 is 222886331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133688227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33422054 + ... + 33422057.

It is an arithmetic number, because the mean of its divisors is an integer number (50133084).

Almost surely, 2^133688222 is an apocalyptic number.

133688222 is a deficient number, since it is larger than the sum of its proper divisors (66844114).

133688222 is an equidigital number, since it uses as much as digits as its factorization.

133688222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66844113.

The product of its digits is 27648, while the sum is 35.

The square root of 133688222 is about 11562.3623018828. The cubic root of 133688222 is about 511.3258109372.

The spelling of 133688222 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, two hundred twenty-two".