1100021012001 has 40 divisors (see below), whose sum is σ = 1776921822720. Its totient is φ = 675523919232.

The previous prime is 1100021011997. The next prime is 1100021012011. The reversal of 1100021012001 is 1002101200011.

It is a happy number.

It is not a de Polignac number, because 1100021012001 - 2² = 1100021011997 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1100021012011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8433721 + ... + 8563158.

It is an arithmetic number, because the mean of its divisors is an integer number (44423045568).

Almost surely, 2^{1100021012001} is an apocalyptic number.

It is an amenable number.

1100021012001 is a deficient number, since it is larger than the sum of its proper divisors (676900810719).

1100021012001 is a wasteful number, since it uses less digits than its factorization.

1100021012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16996955 (or 16996946 counting only the distinct ones).

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

Adding to 1100021012001 its reverse (1002101200011), we get a palindrome (2102122212012).

The spelling of 1100021012001 in words is "one trillion, one hundred billion, twenty-one million, twelve thousand, one".