2111102001 has 16 divisors (see below), whose sum is σ = 3171611520. Its totient is φ = 1387577520.

The previous prime is 2111101997. The next prime is 2111102011. The reversal of 2111102001 is 1002011112.

It is a happy number.

It is not a de Polignac number, because 2111102001 - 2² = 2111101997 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 (2111102011) 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, 548710 + ... + 552543.

It is an arithmetic number, because the mean of its divisors is an integer number (198225720).

Almost surely, 2^2111102001 is an apocalyptic number.

It is an amenable number.

2111102001 is a deficient number, since it is larger than the sum of its proper divisors (1060509519).

2111102001 is a wasteful number, since it uses less digits than its factorization.

2111102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101333 (or 1101327 counting only the distinct ones).

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

The square root of 2111102001 is about 45946.7300359884. The cubic root of 2111102001 is about 1282.8318651454.

Adding to 2111102001 its reverse (1002011112), we get a palindrome (3113113113).

The spelling of 2111102001 in words is "two billion, one hundred eleven million, one hundred two thousand, one".