210120021020093 has 2 divisors, whose sum is σ = 210120021020094. Its totient is φ = 210120021020092.

The previous prime is 210120021020087. The next prime is 210120021020131. The reversal of 210120021020093 is 390020120021012.

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., 163644141768409 + 46475879251684 = 12792347^2 + 6817322^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120021020093 - 2¹⁸ = 210120020757949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120021020053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060010510046 + 105060010510047.

It is an arithmetic number, because the mean of its divisors is an integer number (105060010510047).

Almost surely, 2^{210120021020093} is an apocalyptic number.

It is an amenable number.

210120021020093 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120021020093 is an equidigital number, since it uses as much as digits as its factorization.

210120021020093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 210120021020093 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, twenty thousand, ninety-three".