11110002000021 has 96 divisors (see below), whose sum is σ = 17809908480000. Its totient is φ = 6642958417920.

The previous prime is 11110001999983. The next prime is 11110002000023. The reversal of 11110002000021 is 12000020001111.

It is a happy number.

It is not a de Polignac number, because 11110002000021 - 2¹¹ = 11110001997973 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 = 11110001999967 and 11110002000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110002000023) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 91493455 + ... + 91614803.

It is an arithmetic number, because the mean of its divisors is an integer number (185519880000).

Almost surely, 2^{11110002000021} is an apocalyptic number.

It is an amenable number.

11110002000021 is a deficient number, since it is larger than the sum of its proper divisors (6699906479979).

11110002000021 is a wasteful number, since it uses less digits than its factorization.

11110002000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121699 (or 121696 counting only the distinct ones).

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

Adding to 11110002000021 its reverse (12000020001111), we get a palindrome (23110022001132).

The spelling of 11110002000021 in words is "eleven trillion, one hundred ten billion, two million, twenty-one", and thus it is an aban number.