2120111220011 has 4 divisors (see below), whose sum is σ = 2120126817624. Its totient is φ = 2120095622400.

The previous prime is 2120111219981. The next prime is 2120111220041. The reversal of 2120111220011 is 1100221110212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2120111219981) and next prime (2120111220041).

It is a cyclic number.

It is not a de Polignac number, because 2120111220011 - 2¹⁰ = 2120111218987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120111220041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7593110 + ... + 7867371.

It is an arithmetic number, because the mean of its divisors is an integer number (530031704406).

Almost surely, 2^{2120111220011} is an apocalyptic number.

2120111220011 is a deficient number, since it is larger than the sum of its proper divisors (15597613).

2120111220011 is a wasteful number, since it uses less digits than its factorization.

2120111220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15597612.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2120111220011 its reverse (1100221110212), we get a palindrome (3220332330223).

The spelling of 2120111220011 in words is "two trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty thousand, eleven".