2120011101 has 24 divisors (see below), whose sum is σ = 3299552256. Its totient is φ = 1303927200.

The previous prime is 2120011097. The next prime is 2120011111. The reversal of 2120011101 is 1011100212.

It is a happy number.

It is not a de Polignac number, because 2120011101 - 2² = 2120011097 is a prime.

It is a super-3 number, since 3×2120011101³ (a number of 29 digits) contains 333 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120011111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 294916 + ... + 302018.

It is an arithmetic number, because the mean of its divisors is an integer number (137481344).

Almost surely, 2^2120011101 is an apocalyptic number.

It is an amenable number.

2120011101 is a deficient number, since it is larger than the sum of its proper divisors (1179541155).

2120011101 is a wasteful number, since it uses less digits than its factorization.

2120011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673 (or 9670 counting only the distinct ones).

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

The square root of 2120011101 is about 46043.5782818842. The cubic root of 2120011101 is about 1284.6338999564.

Adding to 2120011101 its reverse (1011100212), we get a palindrome (3131111313).

The spelling of 2120011101 in words is "two billion, one hundred twenty million, eleven thousand, one hundred one".