20212200123173 has 2 divisors, whose sum is σ = 20212200123174. Its totient is φ = 20212200123172.

The previous prime is 20212200123127. The next prime is 20212200123187. The reversal of 20212200123173 is 37132100221202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17545517655169 + 2666682468004 = 4188737^2 + 1632998^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212200123173 - 2³² = 20207905155877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212200113173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100061586 + 10106100061587.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100061587).

Almost surely, 2^{20212200123173} is an apocalyptic number.

It is an amenable number.

20212200123173 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212200123173 is an equidigital number, since it uses as much as digits as its factorization.

20212200123173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20212200123173 its reverse (37132100221202), we get a palindrome (57344300344375).

The spelling of 20212200123173 in words is "twenty trillion, two hundred twelve billion, two hundred million, one hundred twenty-three thousand, one hundred seventy-three".