11505120121030 has 64 divisors (see below), whose sum is σ = 21621901017600. Its totient is φ = 4402829813760.

The previous prime is 11505120121007. The next prime is 11505120121043. The reversal of 11505120121030 is 3012102150511.

11505120121030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11505120120992 and 11505120121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13204516 + ... + 14048824.

It is an arithmetic number, because the mean of its divisors is an integer number (337842203400).

Almost surely, 2^{11505120121030} is an apocalyptic number.

11505120121030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11505120121030 is a deficient number, since it is larger than the sum of its proper divisors (10116780896570).

11505120121030 is a wasteful number, since it uses less digits than its factorization.

11505120121030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844849.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 11505120121030 its reverse (3012102150511), we get a palindrome (14517222271541).

The spelling of 11505120121030 in words is "eleven trillion, five hundred five billion, one hundred twenty million, one hundred twenty-one thousand, thirty".