133211211 has 32 divisors (see below), whose sum is σ = 209891328. Its totient is φ = 73560960.

The previous prime is 133211179. The next prime is 133211219. The reversal of 133211211 is 112112331.

It is a happy number.

It is not a de Polignac number, because 133211211 - 2⁵ = 133211179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133211219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133926 + ... + 134916.

It is an arithmetic number, because the mean of its divisors is an integer number (6559104).

Almost surely, 2^133211211 is an apocalyptic number.

133211211 is a deficient number, since it is larger than the sum of its proper divisors (76680117).

133211211 is a wasteful number, since it uses less digits than its factorization.

133211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its digits is 36, while the sum is 15.

The square root of 133211211 is about 11541.7161202310. The cubic root of 133211211 is about 510.7169347922.

Adding to 133211211 its reverse (112112331), we get a palindrome (245323542).

The spelling of 133211211 in words is "one hundred thirty-three million, two hundred eleven thousand, two hundred eleven".