2120222011111 has 4 divisors (see below), whose sum is σ = 2138985037872. Its totient is φ = 2101458984352.

The previous prime is 2120222011087. The next prime is 2120222011189. The reversal of 2120222011111 is 1111102220212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120222011111 - 2⁵ = 2120222011079 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 (2120222011511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9381513211 + ... + 9381513436.

It is an arithmetic number, because the mean of its divisors is an integer number (534746259468).

Almost surely, 2^{2120222011111} is an apocalyptic number.

2120222011111 is a deficient number, since it is larger than the sum of its proper divisors (18763026761).

2120222011111 is a wasteful number, since it uses less digits than its factorization.

2120222011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18763026760.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2120222011111 its reverse (1111102220212), we get a palindrome (3231324231323).

The spelling of 2120222011111 in words is "two trillion, one hundred twenty billion, two hundred twenty-two million, eleven thousand, one hundred eleven".