11146488021 has 12 divisors (see below), whose sum is σ = 16535631372. Its totient is φ = 7230154176.

The previous prime is 11146488007. The next prime is 11146488047. The reversal of 11146488021 is 12088464111.

11146488021 is a `hidden beast` number, since 1 + 1 + 1 + 4 + 648 + 8 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5683652100 + 5462835921 = 75390^2 + 73911^2 .

It is not a de Polignac number, because 11146488021 - 2³¹ = 8999004373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11146483021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16736136 + ... + 16736801.

It is an arithmetic number, because the mean of its divisors is an integer number (1377969281).

Almost surely, 2^11146488021 is an apocalyptic number.

It is an amenable number.

11146488021 is a deficient number, since it is larger than the sum of its proper divisors (5389143351).

11146488021 is a wasteful number, since it uses less digits than its factorization.

11146488021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33472980 (or 33472977 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 11146488021 in words is "eleven billion, one hundred forty-six million, four hundred eighty-eight thousand, twenty-one".