111010000121 has 2 divisors, whose sum is σ = 111010000122. Its totient is φ = 111010000120.

The previous prime is 111010000067. The next prime is 111010000163. The reversal of 111010000121 is 121000010111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58825166521 + 52184833600 = 242539^2 + 228440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111010000121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111010000099 and 111010000108.

It is not a weakly prime, because it can be changed into another prime (111010002121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505000060 + 55505000061.

It is an arithmetic number, because the mean of its divisors is an integer number (55505000061).

Almost surely, 2^111010000121 is an apocalyptic number.

It is an amenable number.

111010000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010000121 is an equidigital number, since it uses as much as digits as its factorization.

111010000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111010000121 its reverse (121000010111), we get a palindrome (232010010232).

The spelling of 111010000121 in words is "one hundred eleven billion, ten million, one hundred twenty-one", and thus it is an aban number.