11102001000021 has 80 divisors (see below), whose sum is σ = 16884262792320. Its totient is φ = 7268267635200.

The previous prime is 11102001000011. The next prime is 11102001000023. The reversal of 11102001000021 is 12000010020111.

It is a happy number.

11102001000021 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 11102001000021 - 2⁵ = 11102000999989 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 = 11102000999967 and 11102001000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102001000023) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2736503025 + ... + 2736507081.

It is an arithmetic number, because the mean of its divisors is an integer number (211053284904).

Almost surely, 2^{11102001000021} is an apocalyptic number.

It is an amenable number.

11102001000021 is a deficient number, since it is larger than the sum of its proper divisors (5782261792299).

11102001000021 is an equidigital number, since it uses as much as digits as its factorization.

11102001000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576 (or 5567 counting only the distinct ones).

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

Adding to 11102001000021 its reverse (12000010020111), we get a palindrome (23102011020132).

The spelling of 11102001000021 in words is "eleven trillion, one hundred two billion, one million, twenty-one", and thus it is an aban number.