2111122200121 has 16 divisors (see below), whose sum is σ = 2331563472000. Its totient is φ = 1895515706880.

The previous prime is 2111122200097. The next prime is 2111122200149. The reversal of 2111122200121 is 1210022211112.

It is a de Polignac number, because none of the positive numbers 2^k-2111122200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111122200095 and 2111122200104.

It is not an unprimeable number, because it can be changed into a prime (2111122200191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1511746 + ... + 2551003.

It is an arithmetic number, because the mean of its divisors is an integer number (145722717000).

Almost surely, 2^{2111122200121} is an apocalyptic number.

It is an amenable number.

2111122200121 is a deficient number, since it is larger than the sum of its proper divisors (220441271879).

2111122200121 is a wasteful number, since it uses less digits than its factorization.

2111122200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4063344.

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

Adding to 2111122200121 its reverse (1210022211112), we get a palindrome (3321144411233).

The spelling of 2111122200121 in words is "two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred thousand, one hundred twenty-one".