20010210202009 has 4 divisors (see below), whose sum is σ = 20010738116304. Its totient is φ = 20009682287716.

The previous prime is 20010210201983. The next prime is 20010210202061. The reversal of 20010210202009 is 90020201201002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20010210202009 - 2⁹ = 20010210201497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010210202709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263900287 + ... + 263976100.

It is an arithmetic number, because the mean of its divisors is an integer number (5002684529076).

Almost surely, 2^{20010210202009} is an apocalyptic number.

It is an amenable number.

20010210202009 is a deficient number, since it is larger than the sum of its proper divisors (527914295).

20010210202009 is an equidigital number, since it uses as much as digits as its factorization.

20010210202009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527914294.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20010210202009 in words is "twenty trillion, ten billion, two hundred ten million, two hundred two thousand, nine".