11031440212 has 24 divisors (see below), whose sum is σ = 20880830600. Its totient is φ = 5069195136.

The previous prime is 11031440207. The next prime is 11031440213. The reversal of 11031440212 is 21204413011.

It can be written as a sum of positive squares in 4 ways, for example, as 1465817796 + 9565622416 = 38286^2 + 97804^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11031440212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031440213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451287 + ... + 475102.

Almost surely, 2^11031440212 is an apocalyptic number.

It is an amenable number.

11031440212 is a deficient number, since it is larger than the sum of its proper divisors (9849390388).

11031440212 is a wasteful number, since it uses less digits than its factorization.

11031440212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926635 (or 926633 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11031440212 its reverse (21204413011), we get a palindrome (32235853223).

The spelling of 11031440212 in words is "eleven billion, thirty-one million, four hundred forty thousand, two hundred twelve".