11101002001021 has 16 divisors (see below), whose sum is σ = 11681327347200. Its totient is φ = 10534124664000.

The previous prime is 11101002000997. The next prime is 11101002001027. The reversal of 11101002001021 is 12010020010111.

It is a cyclic number.

It is not a de Polignac number, because 11101002001021 - 2²¹ = 11100999903869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101002000989 and 11101002001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101002001027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265005 + ... + 4719346.

It is an arithmetic number, because the mean of its divisors is an integer number (730082959200).

Almost surely, 2^{11101002001021} is an apocalyptic number.

It is an amenable number.

11101002001021 is a deficient number, since it is larger than the sum of its proper divisors (580325346179).

11101002001021 is a wasteful number, since it uses less digits than its factorization.

11101002001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4985700.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11101002001021 its reverse (12010020010111), we get a palindrome (23111022011132).

The spelling of 11101002001021 in words is "eleven trillion, one hundred one billion, two million, one thousand, twenty-one".