11500204110421 has 16 divisors (see below), whose sum is σ = 12707010747648. Its totient is φ = 10340243222400.

The previous prime is 11500204110419. The next prime is 11500204110497. The reversal of 11500204110421 is 12401140200511.

It is a happy number.

11500204110421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11500204110421 - 2¹ = 11500204110419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11500204110392 and 11500204110401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11500204110221) 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, 16760641 + ... + 17433286.

It is an arithmetic number, because the mean of its divisors is an integer number (794188171728).

Almost surely, 2^{11500204110421} is an apocalyptic number.

It is an amenable number.

11500204110421 is a deficient number, since it is larger than the sum of its proper divisors (1206806637227).

11500204110421 is a wasteful number, since it uses less digits than its factorization.

11500204110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34194612.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 11500204110421 its reverse (12401140200511), we get a palindrome (23901344310932).

The spelling of 11500204110421 in words is "eleven trillion, five hundred billion, two hundred four million, one hundred ten thousand, four hundred twenty-one".