11211130540 has 12 divisors (see below), whose sum is σ = 23543374176. Its totient is φ = 4484452208.

The previous prime is 11211130529. The next prime is 11211130549. The reversal of 11211130540 is 4503111211.

It is not an unprimeable number, because it can be changed into a prime (11211130549) 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, 280278244 + ... + 280278283.

It is an arithmetic number, because the mean of its divisors is an integer number (1961947848).

Almost surely, 2^11211130540 is an apocalyptic number.

11211130540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211130540 is an abundant number, since it is smaller than the sum of its proper divisors (12332243636).

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

11211130540 is a wasteful number, since it uses less digits than its factorization.

11211130540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560556536 (or 560556534 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 11211130540 its reverse (4503111211), we get a palindrome (15714241751).

The spelling of 11211130540 in words is "eleven billion, two hundred eleven million, one hundred thirty thousand, five hundred forty".