11002100001021 has 32 divisors (see below), whose sum is σ = 16425733104000. Its totient is φ = 7277899749120.

The previous prime is 11002100000993. The next prime is 11002100001031. The reversal of 11002100001021 is 12010000120011.

It is a happy number.

It is not a de Polignac number, because 11002100001021 - 2⁵ = 11002100000989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11002100000994 and 11002100001012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002100001031) 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 31 ways as a sum of consecutive naturals, for example, 31123155 + ... + 31474671.

It is an arithmetic number, because the mean of its divisors is an integer number (513304159500).

Almost surely, 2^{11002100001021} is an apocalyptic number.

It is an amenable number.

11002100001021 is a deficient number, since it is larger than the sum of its proper divisors (5423633102979).

11002100001021 is a wasteful number, since it uses less digits than its factorization.

11002100001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360506 (or 360500 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11002100001021 its reverse (12010000120011), we get a palindrome (23012100121032).

The spelling of 11002100001021 in words is "eleven trillion, two billion, one hundred million, one thousand, twenty-one".