1111232011 has 4 divisors (see below), whose sum is σ = 1111344552. Its totient is φ = 1111119472.

The previous prime is 1111232009. The next prime is 1111232029. The reversal of 1111232011 is 1102321111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1111232011 - 2¹ = 1111232009 is a prime.

It is a super-2 number, since 2×1111232011² = 2469673164542208242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111231982 and 1111232000.

It is not an unprimeable number, because it can be changed into a prime (1111202011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39865 + ... + 61738.

It is an arithmetic number, because the mean of its divisors is an integer number (277836138).

Almost surely, 2^1111232011 is an apocalyptic number.

1111232011 is a deficient number, since it is larger than the sum of its proper divisors (112541).

1111232011 is a wasteful number, since it uses less digits than its factorization.

1111232011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112540.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1111232011 is about 33335.1467823377. The cubic root of 1111232011 is about 1035.7817336953.

Adding to 1111232011 its reverse (1102321111), we get a palindrome (2213553122).

The spelling of 1111232011 in words is "one billion, one hundred eleven million, two hundred thirty-two thousand, eleven".