210110220001993 has 2 divisors, whose sum is σ = 210110220001994. Its totient is φ = 210110220001992.

The previous prime is 210110220001879. The next prime is 210110220002069. The reversal of 210110220001993 is 399100022011012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157992028582144 + 52118191419849 = 12569488^2 + 7219293^2 .

It is a cyclic number.

It is not a de Polignac number, because 210110220001993 - 2⁹ = 210110220001481 is a prime.

It is not a weakly prime, because it can be changed into another prime (210110220001093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055110000996 + 105055110000997.

It is an arithmetic number, because the mean of its divisors is an integer number (105055110000997).

Almost surely, 2^{210110220001993} is an apocalyptic number.

It is an amenable number.

210110220001993 is a deficient number, since it is larger than the sum of its proper divisors (1).

210110220001993 is an equidigital number, since it uses as much as digits as its factorization.

210110220001993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 210110220001993 in words is "two hundred ten trillion, one hundred ten billion, two hundred twenty million, one thousand, nine hundred ninety-three".