202110002009 has 2 divisors, whose sum is σ = 202110002010. Its totient is φ = 202110002008.

The previous prime is 202110001997. The next prime is 202110002021. The reversal of 202110002009 is 900200011202.

It is a balanced prime because it is at equal distance from previous prime (202110001997) and next prime (202110002021).

It can be written as a sum of positive squares in only one way, i.e., 155548993609 + 46561008400 = 394397^2 + 215780^2 .

It is a cyclic number.

It is not a de Polignac number, because 202110002009 - 2¹⁶ = 202109936473 is a prime.

It is not a weakly prime, because it can be changed into another prime (202110002099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055001004 + 101055001005.

It is an arithmetic number, because the mean of its divisors is an integer number (101055001005).

Almost surely, 2^202110002009 is an apocalyptic number.

It is an amenable number.

202110002009 is a deficient number, since it is larger than the sum of its proper divisors (1).

202110002009 is an equidigital number, since it uses as much as digits as its factorization.

202110002009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 202110002009 in words is "two hundred two billion, one hundred ten million, two thousand, nine".