1111213211 has 16 divisors (see below), whose sum is σ = 1210746528. Its totient is φ = 1015872000.

The previous prime is 1111213189. The next prime is 1111213223. The reversal of 1111213211 is 1123121111.

It is a cyclic number.

It is not a de Polignac number, because 1111213211 - 2¹⁸ = 1110951067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111213231) 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, 84896 + ... + 97106.

It is an arithmetic number, because the mean of its divisors is an integer number (75671658).

Almost surely, 2^1111213211 is an apocalyptic number.

1111213211 is a deficient number, since it is larger than the sum of its proper divisors (99533317).

1111213211 is a wasteful number, since it uses less digits than its factorization.

1111213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382.

The product of its digits is 12, while the sum is 14.

The square root of 1111213211 is about 33334.8647964860. The cubic root of 1111213211 is about 1035.7758924890.

Adding to 1111213211 its reverse (1123121111), we get a palindrome (2234334322).

The spelling of 1111213211 in words is "one billion, one hundred eleven million, two hundred thirteen thousand, two hundred eleven".