201102100202009 has 2 divisors, whose sum is σ = 201102100202010. Its totient is φ = 201102100202008.

The previous prime is 201102100201999. The next prime is 201102100202089. The reversal of 201102100202009 is 900202001201102.

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., 185537852227984 + 15564247974025 = 13621228^2 + 3945155^2 .

It is a cyclic number.

It is not a de Polignac number, because 201102100202009 - 2⁴ = 201102100201993 is a prime.

It is not a weakly prime, because it can be changed into another prime (201102100202089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100551050101004 + 100551050101005.

It is an arithmetic number, because the mean of its divisors is an integer number (100551050101005).

Almost surely, 2^{201102100202009} is an apocalyptic number.

It is an amenable number.

201102100202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201102100202009 is an equidigital number, since it uses as much as digits as its factorization.

201102100202009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 201102100202009 in words is "two hundred one trillion, one hundred two billion, one hundred million, two hundred two thousand, nine".