133331222 has 4 divisors (see below), whose sum is σ = 199996836. Its totient is φ = 66665610.

The previous prime is 133331201. The next prime is 133331251. The reversal of 133331222 is 222133331.

133331222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 133331194 and 133331203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33332804 + ... + 33332807.

It is an arithmetic number, because the mean of its divisors is an integer number (49999209).

Almost surely, 2^133331222 is an apocalyptic number.

133331222 is a deficient number, since it is larger than the sum of its proper divisors (66665614).

133331222 is an equidigital number, since it uses as much as digits as its factorization.

133331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66665613.

The product of its digits is 648, while the sum is 20.

The square root of 133331222 is about 11546.9139600155. The cubic root of 133331222 is about 510.8702583571.

Adding to 133331222 its reverse (222133331), we get a palindrome (355464553).

The spelling of 133331222 in words is "one hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty-two".