11212535540 has 48 divisors (see below), whose sum is σ = 23632557312. Its totient is φ = 4468628736.

The previous prime is 11212535507. The next prime is 11212535567. The reversal of 11212535540 is 4553521211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11965952 + ... + 11966888.

It is an arithmetic number, because the mean of its divisors is an integer number (492344944).

Almost surely, 2^11212535540 is an apocalyptic number.

11212535540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212535540 is an abundant number, since it is smaller than the sum of its proper divisors (12420021772).

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

11212535540 is a wasteful number, since it uses less digits than its factorization.

11212535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 11212535540 in words is "eleven billion, two hundred twelve million, five hundred thirty-five thousand, five hundred forty".