2222221011121 has 2 divisors, whose sum is σ = 2222221011122. Its totient is φ = 2222221011120.

The previous prime is 2222221011091. The next prime is 2222221011137. The reversal of 2222221011121 is 1211101222222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2071552825521 + 150668185600 = 1439289^2 + 388160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222221011121 - 2¹³ = 2222221002929 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222221011181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111110505560 + 1111110505561.

It is an arithmetic number, because the mean of its divisors is an integer number (1111110505561).

Almost surely, 2^{2222221011121} is an apocalyptic number.

It is an amenable number.

2222221011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222221011121 is an equidigital number, since it uses as much as digits as its factorization.

2222221011121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2222221011121 its reverse (1211101222222), we get a palindrome (3433322233343).

The spelling of 2222221011121 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-one million, eleven thousand, one hundred twenty-one".