11001365121 has 16 divisors (see below), whose sum is σ = 14753534400. Its totient is φ = 7291773888.

The previous prime is 11001365117. The next prime is 11001365147. The reversal of 11001365121 is 12156310011.

It is a happy number.

It is not a de Polignac number, because 11001365121 - 2² = 11001365117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11001365101) 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, 927295 + ... + 939083.

It is an arithmetic number, because the mean of its divisors is an integer number (922095900).

Almost surely, 2^11001365121 is an apocalyptic number.

It is an amenable number.

11001365121 is a deficient number, since it is larger than the sum of its proper divisors (3752169279).

11001365121 is a wasteful number, since it uses less digits than its factorization.

11001365121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13568.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 11001365121 its reverse (12156310011), we get a palindrome (23157675132).

The spelling of 11001365121 in words is "eleven billion, one million, three hundred sixty-five thousand, one hundred twenty-one".