212190749091953 has 2 divisors, whose sum is σ = 212190749091954. Its totient is φ = 212190749091952.

The previous prime is 212190749091947. The next prime is 212190749092009. The reversal of 212190749091953 is 359190947091212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171926038771249 + 40264710320704 = 13112057^2 + 6345448^2 .

It is a cyclic number.

It is not a de Polignac number, because 212190749091953 - 2⁸ = 212190749091697 is a prime.

It is not a weakly prime, because it can be changed into another prime (212190749091943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106095374545976 + 106095374545977.

It is an arithmetic number, because the mean of its divisors is an integer number (106095374545977).

Almost surely, 2^{212190749091953} is an apocalyptic number.

It is an amenable number.

212190749091953 is a deficient number, since it is larger than the sum of its proper divisors (1).

212190749091953 is an equidigital number, since it uses as much as digits as its factorization.

212190749091953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The spelling of 212190749091953 in words is "two hundred twelve trillion, one hundred ninety billion, seven hundred forty-nine million, ninety-one thousand, nine hundred fifty-three".