2101101201 has 20 divisors (see below), whose sum is σ = 3151627952. Its totient is φ = 1400721012.

The previous prime is 2101101181. The next prime is 2101101227. The reversal of 2101101201 is 1021011012.

It is a happy number.

It is not a de Polignac number, because 2101101201 - 2⁶ = 2101101137 is a prime.

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 (2101101251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33691 + ... + 73056.

Almost surely, 2^2101101201 is an apocalyptic number.

It is an amenable number.

2101101201 is a deficient number, since it is larger than the sum of its proper divisors (1050526751).

2101101201 is an frugal number, since it uses more digits than its factorization.

2101101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106774 (or 106750 counting only the distinct ones).

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

The square root of 2101101201 is about 45837.7704627963. The cubic root of 2101101201 is about 1280.8029631842.

Adding to 2101101201 its reverse (1021011012), we get a palindrome (3122112213).

The spelling of 2101101201 in words is "two billion, one hundred one million, one hundred one thousand, two hundred one".