11521145100 has 72 divisors (see below), whose sum is σ = 34235478928. Its totient is φ = 2989267200.

The previous prime is 11521145057. The next prime is 11521145107. The reversal of 11521145100 is 154112511.

It is not an unprimeable number, because it can be changed into a prime (11521145107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 507871 + ... + 530070.

Almost surely, 2^11521145100 is an apocalyptic number.

11521145100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521145100 is an abundant number, since it is smaller than the sum of its proper divisors (22714333828).

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

11521145100 is a wasteful number, since it uses less digits than its factorization.

11521145100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037995 (or 1037988 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 11521145100 its reverse (154112511), we get a palindrome (11675257611).

The spelling of 11521145100 in words is "eleven billion, five hundred twenty-one million, one hundred forty-five thousand, one hundred".