201101013209 has 2 divisors, whose sum is σ = 201101013210. Its totient is φ = 201101013208.

The previous prime is 201101013187. The next prime is 201101013251. The reversal of 201101013209 is 902310101102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199119427984 + 1981585225 = 446228^2 + 44515^2 .

It is a cyclic number.

It is not a de Polignac number, because 201101013209 - 2⁸ = 201101012953 is a prime.

It is not a weakly prime, because it can be changed into another prime (201101013109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550506604 + 100550506605.

It is an arithmetic number, because the mean of its divisors is an integer number (100550506605).

Almost surely, 2^201101013209 is an apocalyptic number.

It is an amenable number.

201101013209 is a deficient number, since it is larger than the sum of its proper divisors (1).

201101013209 is an equidigital number, since it uses as much as digits as its factorization.

201101013209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The spelling of 201101013209 in words is "two hundred one billion, one hundred one million, thirteen thousand, two hundred nine".