11001101121021 has 32 divisors (see below), whose sum is σ = 16847498304000. Its totient is φ = 6315031529280.

The previous prime is 11001101121013. The next prime is 11001101121029. The reversal of 11001101121021 is 12012110110011.

It is an interprime number because it is at equal distance from previous prime (11001101121013) and next prime (11001101121029).

It is not a de Polignac number, because 11001101121021 - 2³ = 11001101121013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11001101120988 and 11001101121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001101121029) 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 31 ways as a sum of consecutive naturals, for example, 923710 + ... + 4780736.

It is an arithmetic number, because the mean of its divisors is an integer number (526484322000).

Almost surely, 2^{11001101121021} is an apocalyptic number.

11001101121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001101121021 is a deficient number, since it is larger than the sum of its proper divisors (5846397182979).

11001101121021 is a wasteful number, since it uses less digits than its factorization.

11001101121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861609.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11001101121021 its reverse (12012110110011), we get a palindrome (23013211231032).

The spelling of 11001101121021 in words is "eleven trillion, one billion, one hundred one million, one hundred twenty-one thousand, twenty-one".