1111022122121 has 2 divisors, whose sum is σ = 1111022122122. Its totient is φ = 1111022122120.

The previous prime is 1111022122087. The next prime is 1111022122129. The reversal of 1111022122121 is 1212212201111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 850473128521 + 260548993600 = 922211^2 + 510440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111022122121 - 2⁶ = 1111022122057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111022122121.

It is not a weakly prime, because it can be changed into another prime (1111022122129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555511061060 + 555511061061.

It is an arithmetic number, because the mean of its divisors is an integer number (555511061061).

Almost surely, 2^{1111022122121} is an apocalyptic number.

It is an amenable number.

1111022122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111022122121 is an equidigital number, since it uses as much as digits as its factorization.

1111022122121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1111022122121 its reverse (1212212201111), we get a palindrome (2323234323232).

The spelling of 1111022122121 in words is "one trillion, one hundred eleven billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".