2120122222111 has 4 divisors (see below), whose sum is σ = 2120132076592. Its totient is φ = 2120112367632.

The previous prime is 2120122222069. The next prime is 2120122222117. The reversal of 2120122222111 is 1112222210212.

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 2120122222111 - 2⁹ = 2120122221599 is a prime.

It is a super-3 number, since 3×2120122222111³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122222117) 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, 4597155 + ... + 5037268.

It is an arithmetic number, because the mean of its divisors is an integer number (530033019148).

Almost surely, 2^{2120122222111} is an apocalyptic number.

2120122222111 is a deficient number, since it is larger than the sum of its proper divisors (9854481).

2120122222111 is an equidigital number, since it uses as much as digits as its factorization.

2120122222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9854480.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2120122222111 its reverse (1112222210212), we get a palindrome (3232344432323).

The spelling of 2120122222111 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred eleven".