1112611221121 has 2 divisors, whose sum is σ = 1112611221122. Its totient is φ = 1112611221120.

The previous prime is 1112611221119. The next prime is 1112611221217. The reversal of 1112611221121 is 1211221162111.

It is a m-pointer prime, because the next prime (1112611221217) can be obtained adding 1112611221121 to its product of digits (96).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097122174096 + 15489047025 = 1047436^2 + 124455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112611221121 - 2¹ = 1112611221119 is a prime.

Together with 1112611221119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1112611221092 and 1112611221101.

It is not a weakly prime, because it can be changed into another prime (1112611221221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556305610560 + 556305610561.

It is an arithmetic number, because the mean of its divisors is an integer number (556305610561).

Almost surely, 2^{1112611221121} is an apocalyptic number.

It is an amenable number.

1112611221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112611221121 is an equidigital number, since it uses as much as digits as its factorization.

1112611221121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 22.

Adding to 1112611221121 its reverse (1211221162111), we get a palindrome (2323832383232).

The spelling of 1112611221121 in words is "one trillion, one hundred twelve billion, six hundred eleven million, two hundred twenty-one thousand, one hundred twenty-one".