11111224340 has 12 divisors (see below), whose sum is σ = 23333571156. Its totient is φ = 4444489728.

The previous prime is 11111224337. The next prime is 11111224427. The reversal of 11111224340 is 4342211111.

It can be written as a sum of positive squares in 2 ways, for example, as 6491847184 + 4619377156 = 80572^2 + 67966^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 555561217 = 11111224340 / (1 + 1 + 1 + 1 + 1 + 2 + 2 + 4 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277780589 + ... + 277780628.

It is an arithmetic number, because the mean of its divisors is an integer number (1944464263).

Almost surely, 2^11111224340 is an apocalyptic number.

11111224340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11111224340 is an abundant number, since it is smaller than the sum of its proper divisors (12222346816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111224340 is a wasteful number, since it uses less digits than its factorization.

11111224340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555561226 (or 555561224 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11111224340 its reverse (4342211111), we get a palindrome (15453435451).

The spelling of 11111224340 in words is "eleven billion, one hundred eleven million, two hundred twenty-four thousand, three hundred forty".