20021022000209 has 4 divisors (see below), whose sum is σ = 21074760000240. Its totient is φ = 18967284000180.

The previous prime is 20021022000163. The next prime is 20021022000241. The reversal of 20021022000209 is 90200022012002.

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 20021022000209 - 2¹² = 20021021996113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021022000509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526868999987 + ... + 526869000024.

It is an arithmetic number, because the mean of its divisors is an integer number (5268690000060).

Almost surely, 2^{20021022000209} is an apocalyptic number.

It is an amenable number.

20021022000209 is a deficient number, since it is larger than the sum of its proper divisors (1053738000031).

20021022000209 is a wasteful number, since it uses less digits than its factorization.

20021022000209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053738000030.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 20021022000209 in words is "twenty trillion, twenty-one billion, twenty-two million, two hundred nine", and thus it is an aban number.