1111131211 has 2 divisors, whose sum is σ = 1111131212. Its totient is φ = 1111131210.

The previous prime is 1111131163. The next prime is 1111131253. The reversal of 1111131211 is 1121311111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111131211 - 2¹⁷ = 1111000139 is a prime.

It is a super-2 number, since 2×1111131211² = 2469225136116653042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111131191 and 1111131200.

It is not a weakly prime, because it can be changed into another prime (1118131211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555565605 + 555565606.

It is an arithmetic number, because the mean of its divisors is an integer number (555565606).

Almost surely, 2^1111131211 is an apocalyptic number.

1111131211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111131211 is an equidigital number, since it uses as much as digits as its factorization.

1111131211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6, while the sum is 13.

The square root of 1111131211 is about 33333.6348303032. The cubic root of 1111131211 is about 1035.7504141164.

Adding to 1111131211 its reverse (1121311111), we get a palindrome (2232442322).

The spelling of 1111131211 in words is "one billion, one hundred eleven million, one hundred thirty-one thousand, two hundred eleven".