11501124420 has 48 divisors (see below), whose sum is σ = 32214309120. Its totient is φ = 3065903616.

The previous prime is 11501124373. The next prime is 11501124431. The reversal of 11501124420 is 2442110511.

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, 149676 + ... + 213084.

It is an arithmetic number, because the mean of its divisors is an integer number (671131440).

Almost surely, 2^11501124420 is an apocalyptic number.

11501124420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11501124420 is an abundant number, since it is smaller than the sum of its proper divisors (20713184700).

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

11501124420 is a wasteful number, since it uses less digits than its factorization.

11501124420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66444 (or 66442 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 11501124420 its reverse (2442110511), we get a palindrome (13943234931).

The spelling of 11501124420 in words is "eleven billion, five hundred one million, one hundred twenty-four thousand, four hundred twenty".