2222111011121 has 2 divisors, whose sum is σ = 2222111011122. Its totient is φ = 2222111011120.

The previous prime is 2222111011117. The next prime is 2222111011151. The reversal of 2222111011121 is 1211101112222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2170156191025 + 51954820096 = 1473145^2 + 227936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222111011121 - 2² = 2222111011117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2222111011121.

It is not a weakly prime, because it can be changed into another prime (2222111011151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111055505560 + 1111055505561.

It is an arithmetic number, because the mean of its divisors is an integer number (1111055505561).

Almost surely, 2^{2222111011121} is an apocalyptic number.

It is an amenable number.

2222111011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222111011121 is an equidigital number, since it uses as much as digits as its factorization.

2222111011121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2222111011121 its reverse (1211101112222), we get a palindrome (3433212123343).

It can be divided in two parts, 222211101 and 1121, that added together give a palindrome (222212222).

The spelling of 2222111011121 in words is "two trillion, two hundred twenty-two billion, one hundred eleven million, eleven thousand, one hundred twenty-one".