2100200111001 has 12 divisors (see below), whose sum is σ = 3036508811440. Its totient is φ = 1398801209400.

The previous prime is 2100200110997. The next prime is 2100200111077. The reversal of 2100200111001 is 1001110020012.

It is a happy number.

It is not a de Polignac number, because 2100200111001 - 2² = 2100200110997 is a prime.

It is a super-2 number, since 2×2100200111001² (a number of 25 digits) contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100200111101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111006511 + ... + 111025428.

Almost surely, 2^{2100200111001} is an apocalyptic number.

It is an amenable number.

2100200111001 is a deficient number, since it is larger than the sum of its proper divisors (936308700439).

2100200111001 is a wasteful number, since it uses less digits than its factorization.

2100200111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222032996 (or 222032993 counting only the distinct ones).

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

Adding to 2100200111001 its reverse (1001110020012), we get a palindrome (3101310131013).

The spelling of 2100200111001 in words is "two trillion, one hundred billion, two hundred million, one hundred eleven thousand, one".