2110100001001 has 4 divisors (see below), whose sum is σ = 2110107759172. Its totient is φ = 2110092242832.

The previous prime is 2110100000963. The next prime is 2110100001013. The reversal of 2110100001001 is 1001000010112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 964127610000 + 1145972391001 = 981900^2 + 1070501^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110100001001 - 2¹³ = 2110099992809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2110100001071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455706 + ... + 4020211.

It is an arithmetic number, because the mean of its divisors is an integer number (527526939793).

Almost surely, 2^{2110100001001} is an apocalyptic number.

It is an amenable number.

2110100001001 is a deficient number, since it is larger than the sum of its proper divisors (7758171).

2110100001001 is an equidigital number, since it uses as much as digits as its factorization.

2110100001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7758170.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 2110100001001 its reverse (1001000010112), we get a palindrome (3111100011113).

The spelling of 2110100001001 in words is "two trillion, one hundred ten billion, one hundred million, one thousand, one".