11101715121 has 8 divisors (see below), whose sum is σ = 16916899264. Its totient is φ = 6343837200.

The previous prime is 11101715089. The next prime is 11101715153. The reversal of 11101715121 is 12151710111.

It is an interprime number because it is at equal distance from previous prime (11101715089) and next prime (11101715153).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11101715121 - 2⁵ = 11101715089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 528653101 = 11101715121 / (1 + 1 + 1 + 0 + 1 + 7 + 1 + 5 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101715161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264326530 + ... + 264326571.

It is an arithmetic number, because the mean of its divisors is an integer number (2114612408).

Almost surely, 2^11101715121 is an apocalyptic number.

It is an amenable number.

11101715121 is a deficient number, since it is larger than the sum of its proper divisors (5815184143).

11101715121 is an equidigital number, since it uses as much as digits as its factorization.

11101715121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528653111.

The product of its (nonzero) digits is 70, while the sum is 21.

The spelling of 11101715121 in words is "eleven billion, one hundred one million, seven hundred fifteen thousand, one hundred twenty-one".