111012121220009 has 2 divisors, whose sum is σ = 111012121220010. Its totient is φ = 111012121220008.

The previous prime is 111012121219981. The next prime is 111012121220173. The reversal of 111012121220009 is 900022121210111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90737588794384 + 20274532425625 = 9525628^2 + 4502725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111012121220009 is a prime.

It is not a weakly prime, because it can be changed into another prime (111012121220909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55506060610004 + 55506060610005.

It is an arithmetic number, because the mean of its divisors is an integer number (55506060610005).

Almost surely, 2^{111012121220009} is an apocalyptic number.

It is an amenable number.

111012121220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111012121220009 is an equidigital number, since it uses as much as digits as its factorization.

111012121220009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 111012121220009 in words is "one hundred eleven trillion, twelve billion, one hundred twenty-one million, two hundred twenty thousand, nine".