133144222 has 4 divisors (see below), whose sum is σ = 199716336. Its totient is φ = 66572110.

The previous prime is 133144169. The next prime is 133144243. The reversal of 133144222 is 222441331.

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 = 133144193 and 133144202.

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, 33286054 + ... + 33286057.

It is an arithmetic number, because the mean of its divisors is an integer number (49929084).

Almost surely, 2^133144222 is an apocalyptic number.

133144222 is a deficient number, since it is larger than the sum of its proper divisors (66572114).

133144222 is an equidigital number, since it uses as much as digits as its factorization.

133144222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66572113.

The product of its digits is 1152, while the sum is 22.

The square root of 133144222 is about 11538.8137171895. The cubic root of 133144222 is about 510.6313109848.

Adding to 133144222 its reverse (222441331), we get a palindrome (355585553).

The spelling of 133144222 in words is "one hundred thirty-three million, one hundred forty-four thousand, two hundred twenty-two".