210002020102009 has 2 divisors, whose sum is σ = 210002020102010. Its totient is φ = 210002020102008.

The previous prime is 210002020102001. The next prime is 210002020102111. The reversal of 210002020102009 is 900201020200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209866562979984 + 135457122025 = 14486772^2 + 368045^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002020102009 - 2³ = 210002020102001 is a prime.

It is a super-4 number, since 4×210002020102009⁴ (a number of 58 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (210002020102001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105001010051004 + 105001010051005.

It is an arithmetic number, because the mean of its divisors is an integer number (105001010051005).

Almost surely, 2^{210002020102009} is an apocalyptic number.

It is an amenable number.

210002020102009 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002020102009 is an equidigital number, since it uses as much as digits as its factorization.

210002020102009 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 19.

The spelling of 210002020102009 in words is "two hundred ten trillion, two billion, twenty million, one hundred two thousand, nine".