11001001111021 has 24 divisors (see below), whose sum is σ = 11710224406080. Its totient is φ = 10332595456512.

The previous prime is 11001001110997. The next prime is 11001001111033. The reversal of 11001001111021 is 12011110010011.

It is not a de Polignac number, because 11001001111021 - 2⁹ = 11001001110509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001001110989 and 11001001111007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001001111081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 697715280 + ... + 697731046.

It is an arithmetic number, because the mean of its divisors is an integer number (487926016920).

Almost surely, 2^{11001001111021} is an apocalyptic number.

It is an amenable number.

11001001111021 is a deficient number, since it is larger than the sum of its proper divisors (709223295059).

11001001111021 is a wasteful number, since it uses less digits than its factorization.

11001001111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20613 (or 20596 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11001001111021 its reverse (12011110010011), we get a palindrome (23012111121032).

The spelling of 11001001111021 in words is "eleven trillion, one billion, one million, one hundred eleven thousand, twenty-one".