11136555021 has 16 divisors (see below), whose sum is σ = 15013486080. Its totient is φ = 7342171200.

The previous prime is 11136555019. The next prime is 11136555083. The reversal of 11136555021 is 12055563111.

It is not a de Polignac number, because 11136555021 - 2¹ = 11136555019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11136555021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11136555091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240195 + ... + 282783.

It is an arithmetic number, because the mean of its divisors is an integer number (938342880).

Almost surely, 2^11136555021 is an apocalyptic number.

It is an amenable number.

11136555021 is a deficient number, since it is larger than the sum of its proper divisors (3876931059).

11136555021 is a wasteful number, since it uses less digits than its factorization.

11136555021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43556.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 11136555021 in words is "eleven billion, one hundred thirty-six million, five hundred fifty-five thousand, twenty-one".