2120122121111 has 8 divisors (see below), whose sum is σ = 2215029231744. Its totient is φ = 2025442334520.

The previous prime is 2120122121081. The next prime is 2120122121123. The reversal of 2120122121111 is 1111212210212.

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

It is a cyclic number.

It is not a de Polignac number, because 2120122121111 - 2³⁸ = 1845244214167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120122121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122121191) 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, 56811941 + ... + 56849246.

It is an arithmetic number, because the mean of its divisors is an integer number (276878653968).

Almost surely, 2^{2120122121111} is an apocalyptic number.

2120122121111 is a deficient number, since it is larger than the sum of its proper divisors (94907110633).

2120122121111 is a wasteful number, since it uses less digits than its factorization.

2120122121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113662021.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2120122121111 its reverse (1111212210212), we get a palindrome (3231334331323).

The spelling of 2120122121111 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred eleven".