111122001212051 has 2 divisors, whose sum is σ = 111122001212052. Its totient is φ = 111122001212050.

The previous prime is 111122001212009. The next prime is 111122001212071. The reversal of 111122001212051 is 150212100221111.

It is an a-pointer prime, because the next prime (111122001212071) can be obtained adding 111122001212051 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111122001212051 is a prime.

It is not a weakly prime, because it can be changed into another prime (111122001212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55561000606025 + 55561000606026.

It is an arithmetic number, because the mean of its divisors is an integer number (55561000606026).

Almost surely, 2^{111122001212051} is an apocalyptic number.

111122001212051 is a deficient number, since it is larger than the sum of its proper divisors (1).

111122001212051 is an equidigital number, since it uses as much as digits as its factorization.

111122001212051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 20.

Adding to 111122001212051 its reverse (150212100221111), we get a palindrome (261334101433162).

The spelling of 111122001212051 in words is "one hundred eleven trillion, one hundred twenty-two billion, one million, two hundred twelve thousand, fifty-one".