133211822 has 4 divisors (see below), whose sum is σ = 199817736. Its totient is φ = 66605910.

The previous prime is 133211821. The next prime is 133211851. The reversal of 133211822 is 228112331.

It is a happy number.

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 (133211821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33302954 + ... + 33302957.

It is an arithmetic number, because the mean of its divisors is an integer number (49954434).

Almost surely, 2^133211822 is an apocalyptic number.

133211822 is a deficient number, since it is larger than the sum of its proper divisors (66605914).

133211822 is an equidigital number, since it uses as much as digits as its factorization.

133211822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66605913.

The product of its digits is 576, while the sum is 23.

The square root of 133211822 is about 11541.7425894013. The cubic root of 133211822 is about 510.7177156264.

The spelling of 133211822 in words is "one hundred thirty-three million, two hundred eleven thousand, eight hundred twenty-two".