11122513540 has 12 divisors (see below), whose sum is σ = 23357278476. Its totient is φ = 4449005408.

The previous prime is 11122513511. The next prime is 11122513541. The reversal of 11122513540 is 4531522111.

It can be written as a sum of positive squares in 2 ways, for example, as 3182990724 + 7939522816 = 56418^2 + 89104^2 .

It is not an unprimeable number, because it can be changed into a prime (11122513541) 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, 278062819 + ... + 278062858.

It is an arithmetic number, because the mean of its divisors is an integer number (1946439873).

Almost surely, 2^11122513540 is an apocalyptic number.

11122513540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11122513540 is an abundant number, since it is smaller than the sum of its proper divisors (12234764936).

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

11122513540 is a wasteful number, since it uses less digits than its factorization.

11122513540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556125686 (or 556125684 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 11122513540 in words is "eleven billion, one hundred twenty-two million, five hundred thirteen thousand, five hundred forty".