2222220211121 has 2 divisors, whose sum is σ = 2222220211122. Its totient is φ = 2222220211120.

The previous prime is 2222220211111. The next prime is 2222220211153. The reversal of 2222220211121 is 1211120222222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2168877689521 + 53342521600 = 1472711^2 + 230960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222220211121 - 2³⁴ = 2205040341937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2222220211093 and 2222220211102.

It is not a weakly prime, because it can be changed into another prime (2222220211111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111110105560 + 1111110105561.

It is an arithmetic number, because the mean of its divisors is an integer number (1111110105561).

Almost surely, 2^{2222220211121} is an apocalyptic number.

It is an amenable number.

2222220211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222220211121 is an equidigital number, since it uses as much as digits as its factorization.

2222220211121 is an evil number, because the sum of its binary digits is even.

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

Adding to 2222220211121 its reverse (1211120222222), we get a palindrome (3433340433343).

The spelling of 2222220211121 in words is "two trillion, two hundred twenty-two billion, two hundred twenty million, two hundred eleven thousand, one hundred twenty-one".