2120101111 has 8 divisors (see below), whose sum is σ = 2283585920. Its totient is φ = 1961806392.

The previous prime is 2120101099. The next prime is 2120101133. The reversal of 2120101111 is 1111010212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120101111 - 2⁵ = 2120101079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296675 + ... + 1298308.

It is an arithmetic number, because the mean of its divisors is an integer number (285448240).

Almost surely, 2^2120101111 is an apocalyptic number.

2120101111 is a deficient number, since it is larger than the sum of its proper divisors (163484809).

2120101111 is a wasteful number, since it uses less digits than its factorization.

2120101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595045.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 2120101111 is about 46044.5557150897. Note that the first 3 decimals coincide. The cubic root of 2120101111 is about 1284.6520804053.

Adding to 2120101111 its reverse (1111010212), we get a palindrome (3231111323).

It can be divided in two parts, 2120101 and 111, that added together give a palindrome (2120212).

The spelling of 2120101111 in words is "two billion, one hundred twenty million, one hundred one thousand, one hundred eleven".