2101200001101 has 16 divisors (see below), whose sum is σ = 3248231886720. Its totient is φ = 1339895652480.

The previous prime is 2101200001093. The next prime is 2101200001111. The reversal of 2101200001101 is 1011000021012.

It is a happy number.

It is not a de Polignac number, because 2101200001101 - 2³ = 2101200001093 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101200001111) 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, 1691786820 + ... + 1691788061.

It is an arithmetic number, because the mean of its divisors is an integer number (203014492920).

Almost surely, 2^{2101200001101} is an apocalyptic number.

It is an amenable number.

2101200001101 is a deficient number, since it is larger than the sum of its proper divisors (1147031885619).

2101200001101 is a wasteful number, since it uses less digits than its factorization.

2101200001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383574913 (or 3383574907 counting only the distinct ones).

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

Adding to 2101200001101 its reverse (1011000021012), we get a palindrome (3112200022113).

The spelling of 2101200001101 in words is "two trillion, one hundred one billion, two hundred million, one thousand, one hundred one".