11111241021 has 96 divisors (see below), whose sum is σ = 17242657920. Its totient is φ = 6337363968.

The previous prime is 11111240981. The next prime is 11111241041. The reversal of 11111241021 is 12014211111.

It is a happy number.

It is not a de Polignac number, because 11111241021 - 2¹¹ = 11111238973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111241041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 57571101 + ... + 57571293.

It is an arithmetic number, because the mean of its divisors is an integer number (179611020).

Almost surely, 2^11111241021 is an apocalyptic number.

It is an amenable number.

11111241021 is a deficient number, since it is larger than the sum of its proper divisors (6131416899).

11111241021 is a wasteful number, since it uses less digits than its factorization.

11111241021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111241021 its reverse (12014211111), we get a palindrome (23125452132).

The spelling of 11111241021 in words is "eleven billion, one hundred eleven million, two hundred forty-one thousand, twenty-one".