11101320121005 has 24 divisors (see below), whose sum is σ = 19243453652280. Its totient is φ = 5920345466880.

The previous prime is 11101320120977. The next prime is 11101320121043. The reversal of 11101320121005 is 50012102310111.

It can be written as a sum of positive squares in 4 ways, for example, as 2060341581321 + 9040978539684 = 1435389^2 + 3006822^2 .

It is not a de Polignac number, because 11101320121005 - 2⁶ = 11101320120941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6718716 + ... + 8206325.

It is an arithmetic number, because the mean of its divisors is an integer number (801810568845).

Almost surely, 2^{11101320121005} is an apocalyptic number.

11101320121005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11101320121005 is a deficient number, since it is larger than the sum of its proper divisors (8142133531275).

11101320121005 is a wasteful number, since it uses less digits than its factorization.

11101320121005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14941581 (or 14941578 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 11101320121005 its reverse (50012102310111), we get a palindrome (61113422431116).

The spelling of 11101320121005 in words is "eleven trillion, one hundred one billion, three hundred twenty million, one hundred twenty-one thousand, five".