1211132211 has 16 divisors (see below), whose sum is σ = 1711991808. Its totient is φ = 760255200.

The previous prime is 1211132171. The next prime is 1211132213. The reversal of 1211132211 is 1122311121.

It is not a de Polignac number, because 1211132211 - 2⁶ = 1211132147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211132213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172545 + ... + 179426.

It is an arithmetic number, because the mean of its divisors is an integer number (106999488).

Almost surely, 2^1211132211 is an apocalyptic number.

1211132211 is a deficient number, since it is larger than the sum of its proper divisors (500859597).

1211132211 is a wasteful number, since it uses less digits than its factorization.

1211132211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352042.

The product of its digits is 24, while the sum is 15.

The square root of 1211132211 is about 34801.3248454710. The cubic root of 1211132211 is about 1065.9344986018.

Adding to 1211132211 its reverse (1122311121), we get a palindrome (2333443332).

The spelling of 1211132211 in words is "one billion, two hundred eleven million, one hundred thirty-two thousand, two hundred eleven".