2222122120121 has 8 divisors (see below), whose sum is σ = 2242812703560. Its totient is φ = 2201437066752.

The previous prime is 2222122120093. The next prime is 2222122120151. The reversal of 2222122120121 is 1210212212222.

It can be written as a sum of positive squares in 4 ways, for example, as 113205331600 + 2108916788521 = 336460^2 + 1452211^2 .

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 2222122120121 - 2¹⁰ = 2222122119097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2222122120093 and 2222122120102.

It is not an unprimeable number, because it can be changed into a prime (2222122120151) 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 7 ways as a sum of consecutive naturals, for example, 572930 + ... + 2184603.

It is an arithmetic number, because the mean of its divisors is an integer number (280351587945).

Almost surely, 2^{2222122120121} is an apocalyptic number.

It is an amenable number.

2222122120121 is a deficient number, since it is larger than the sum of its proper divisors (20690583439).

2222122120121 is a wasteful number, since it uses less digits than its factorization.

2222122120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765035.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2222122120121 its reverse (1210212212222), we get a palindrome (3432334332343).

The spelling of 2222122120121 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty thousand, one hundred twenty-one".