1122111322121 has 2 divisors, whose sum is σ = 1122111322122. Its totient is φ = 1122111322120.

The previous prime is 1122111322109. The next prime is 1122111322139. The reversal of 1122111322121 is 1212231112211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1088892250000 + 33219072121 = 1043500^2 + 182261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122111322121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122111322093 and 1122111322102.

It is not a weakly prime, because it can be changed into another prime (1122111322181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561055661060 + 561055661061.

It is an arithmetic number, because the mean of its divisors is an integer number (561055661061).

Almost surely, 2^{1122111322121} is an apocalyptic number.

It is an amenable number.

1122111322121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122111322121 is an equidigital number, since it uses as much as digits as its factorization.

1122111322121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

Adding to 1122111322121 its reverse (1212231112211), we get a palindrome (2334342434332).

The spelling of 1122111322121 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, three hundred twenty-two thousand, one hundred twenty-one".