2212211122121 has 64 divisors (see below), whose sum is σ = 2979760089600. Its totient is φ = 1586110464000.

The previous prime is 2212211122103. The next prime is 2212211122123. The reversal of 2212211122121 is 1212211122122.

It is a cyclic number.

It is not a de Polignac number, because 2212211122121 - 2¹⁰ = 2212211121097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212211122093 and 2212211122102.

It is not an unprimeable number, because it can be changed into a prime (2212211122123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 460778921 + ... + 460783721.

It is an arithmetic number, because the mean of its divisors is an integer number (46558751400).

Almost surely, 2^{2212211122121} is an apocalyptic number.

It is an amenable number.

2212211122121 is a deficient number, since it is larger than the sum of its proper divisors (767548967479).

2212211122121 is a wasteful number, since it uses less digits than its factorization.

2212211122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210.

The product of its digits is 128, while the sum is 20.

Adding to 2212211122121 its reverse (1212211122122), we get a palindrome (3424422244243).

Subtracting from 2212211122121 its reverse (1212211122122), we obtain a palindrome (999999999999).

It can be divided in two parts, 2212211 and 122121, that added together give a palindrome (2334332).

The spelling of 2212211122121 in words is "two trillion, two hundred twelve billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-one".