11121020221524 has 12 divisors (see below), whose sum is σ = 25949047183584. Its totient is φ = 3707006740504.

The previous prime is 11121020221523. The next prime is 11121020221529. The reversal of 11121020221524 is 42512202012111.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11121020221494 and 11121020221503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121020221523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463375842552 + ... + 463375842575.

It is an arithmetic number, because the mean of its divisors is an integer number (2162420598632).

Almost surely, 2^{11121020221524} is an apocalyptic number.

It is an amenable number.

11121020221524 is an abundant number, since it is smaller than the sum of its proper divisors (14828026962060).

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

11121020221524 is a wasteful number, since it uses less digits than its factorization.

11121020221524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926751685134 (or 926751685132 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 11121020221524 its reverse (42512202012111), we get a palindrome (53633222233635).

The spelling of 11121020221524 in words is "eleven trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, five hundred twenty-four".