11112101021 has 16 divisors (see below), whose sum is σ = 13255723008. Its totient is φ = 9107775600.

The previous prime is 11112100957. The next prime is 11112101081. The reversal of 11112101021 is 12010121111.

11112101021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11112101021 - 2⁶ = 11112100957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112100993 and 11112101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112101081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650216 + ... + 667086.

It is an arithmetic number, because the mean of its divisors is an integer number (828482688).

Almost surely, 2^11112101021 is an apocalyptic number.

It is an amenable number.

11112101021 is a deficient number, since it is larger than the sum of its proper divisors (2143621987).

11112101021 is a wasteful number, since it uses less digits than its factorization.

11112101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11112101021 its reverse (12010121111), we get a palindrome (23122222132).

The spelling of 11112101021 in words is "eleven billion, one hundred twelve million, one hundred one thousand, twenty-one".