112011220121 has 2 divisors, whose sum is σ = 112011220122. Its totient is φ = 112011220120.

The previous prime is 112011220109. The next prime is 112011220169. The reversal of 112011220121 is 121022110211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110965603225 + 1045616896 = 333115^2 + 32336^2 .

It is an emirp because it is prime and its reverse (121022110211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112011220121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112011220096 and 112011220105.

It is not a weakly prime, because it can be changed into another prime (112011220721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56005610060 + 56005610061.

It is an arithmetic number, because the mean of its divisors is an integer number (56005610061).

Almost surely, 2^112011220121 is an apocalyptic number.

It is an amenable number.

112011220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

112011220121 is an equidigital number, since it uses as much as digits as its factorization.

112011220121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112011220121 its reverse (121022110211), we get a palindrome (233033330332).

The spelling of 112011220121 in words is "one hundred twelve billion, eleven million, two hundred twenty thousand, one hundred twenty-one".