133223211 has 20 divisors (see below), whose sum is σ = 217105944. Its totient is φ = 80740800.

The previous prime is 133223183. The next prime is 133223219. The reversal of 133223211 is 112322331.

It is not a de Polignac number, because 133223211 - 2⁶ = 133223147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133223219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73870 + ... + 75651.

Almost surely, 2^133223211 is an apocalyptic number.

133223211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

133223211 is a deficient number, since it is larger than the sum of its proper divisors (83882733).

133223211 is a wasteful number, since it uses less digits than its factorization.

133223211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149544 (or 149535 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 133223211 is about 11542.2359618923. The cubic root of 133223211 is about 510.7322698859.

Adding to 133223211 its reverse (112322331), we get a palindrome (245545542).

The spelling of 133223211 in words is "one hundred thirty-three million, two hundred twenty-three thousand, two hundred eleven".