210266420101 has 2 divisors, whose sum is σ = 210266420102. Its totient is φ = 210266420100.

The previous prime is 210266420057. The next prime is 210266420113. The reversal of 210266420101 is 101024662012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170878063876 + 39388356225 = 413374^2 + 198465^2 .

It is a cyclic number.

It is not a de Polignac number, because 210266420101 - 2¹¹ = 210266418053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210266450101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105133210050 + 105133210051.

It is an arithmetic number, because the mean of its divisors is an integer number (105133210051).

Almost surely, 2^210266420101 is an apocalyptic number.

It is an amenable number.

210266420101 is a deficient number, since it is larger than the sum of its proper divisors (1).

210266420101 is an equidigital number, since it uses as much as digits as its factorization.

210266420101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 210266420101 in words is "two hundred ten billion, two hundred sixty-six million, four hundred twenty thousand, one hundred one".