210102111101009 has 2 divisors, whose sum is σ = 210102111101010. Its totient is φ = 210102111101008.

The previous prime is 210102111100979. The next prime is 210102111101039. The reversal of 210102111101009 is 900101111201012.

210102111101009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (210102111100979) and next prime (210102111101039).

It can be written as a sum of positive squares in only one way, i.e., 155009272873984 + 55092838227025 = 12450272^2 + 7422455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210102111101009 is a prime.

It is not a weakly prime, because it can be changed into another prime (210102111101039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105051055550504 + 105051055550505.

It is an arithmetic number, because the mean of its divisors is an integer number (105051055550505).

Almost surely, 2^{210102111101009} is an apocalyptic number.

It is an amenable number.

210102111101009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210102111101009 is an equidigital number, since it uses as much as digits as its factorization.

210102111101009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 210102111101009 in words is "two hundred ten trillion, one hundred two billion, one hundred eleven million, one hundred one thousand, nine".