11015397121 has 8 divisors (see below), whose sum is σ = 11376063488. Its totient is φ = 10655064000.

The previous prime is 11015397119. The next prime is 11015397157. The reversal of 11015397121 is 12179351011.

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

It is a 8-Lehmer number, since φ(11015397121) divides (11015397121-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 11015397121 - 2¹ = 11015397119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11015397721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15225 + ... + 149206.

It is an arithmetic number, because the mean of its divisors is an integer number (1422007936).

Almost surely, 2^11015397121 is an apocalyptic number.

It is an amenable number.

11015397121 is a deficient number, since it is larger than the sum of its proper divisors (360666367).

11015397121 is a wasteful number, since it uses less digits than its factorization.

11015397121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166623.

The product of its (nonzero) digits is 1890, while the sum is 31.

The spelling of 11015397121 in words is "eleven billion, fifteen million, three hundred ninety-seven thousand, one hundred twenty-one".