1111222013 has 6 divisors (see below), whose sum is σ = 1221425982. Its totient is φ = 1010201720.

The previous prime is 1111222003. The next prime is 1111222027. The reversal of 1111222013 is 3102221111.

It can be written as a sum of positive squares in only one way, i.e., 923065924 + 188156089 = 30382^2 + 13717^2 .

It is not a de Polignac number, because 1111222013 - 2⁸ = 1111221757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111222003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4591706 + ... + 4591947.

It is an arithmetic number, because the mean of its divisors is an integer number (203570997).

Almost surely, 2^1111222013 is an apocalyptic number.

It is an amenable number.

1111222013 is a deficient number, since it is larger than the sum of its proper divisors (110203969).

1111222013 is an equidigital number, since it uses as much as digits as its factorization.

1111222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9183675 (or 9183664 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1111222013 is about 33334.9968201588. The cubic root of 1111222013 is about 1035.7786273003.

Adding to 1111222013 its reverse (3102221111), we get a palindrome (4213443124).

The spelling of 1111222013 in words is "one billion, one hundred eleven million, two hundred twenty-two thousand, thirteen".