120112211200021 has 2 divisors, whose sum is σ = 120112211200022. Its totient is φ = 120112211200020.

The previous prime is 120112211200019. The next prime is 120112211200057. The reversal of 120112211200021 is 120002112211021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110404088802225 + 9708122397796 = 10507335^2 + 3115786^2 .

It is a cyclic number.

It is not a de Polignac number, because 120112211200021 - 2¹ = 120112211200019 is a prime.

Together with 120112211200019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 120112211199968 and 120112211200004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120112211200081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60056105600010 + 60056105600011.

It is an arithmetic number, because the mean of its divisors is an integer number (60056105600011).

Almost surely, 2^{120112211200021} is an apocalyptic number.

It is an amenable number.

120112211200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120112211200021 is an equidigital number, since it uses as much as digits as its factorization.

120112211200021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120112211200021 its reverse (120002112211021), we get a palindrome (240114323411042).

The spelling of 120112211200021 in words is "one hundred twenty trillion, one hundred twelve billion, two hundred eleven million, two hundred thousand, twenty-one".