11121531652 has 24 divisors (see below), whose sum is σ = 24265160640. Its totient is φ = 4333064160.

The previous prime is 11121531647. The next prime is 11121531719. The reversal of 11121531652 is 25613512111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 11121531652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18054127 + ... + 18054742.

It is an arithmetic number, because the mean of its divisors is an integer number (1011048360).

Almost surely, 2^11121531652 is an apocalyptic number.

It is an amenable number.

11121531652 is an abundant number, since it is smaller than the sum of its proper divisors (13143628988).

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

11121531652 is a wasteful number, since it uses less digits than its factorization.

11121531652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36108891 (or 36108889 counting only the distinct ones).

The product of its digits is 1800, while the sum is 28.

The spelling of 11121531652 in words is "eleven billion, one hundred twenty-one million, five hundred thirty-one thousand, six hundred fifty-two".