2212020021209 has 8 divisors (see below), whose sum is σ = 2347547950440. Its totient is φ = 2077093103616.

The previous prime is 2212020021203. The next prime is 2212020021217. The reversal of 2212020021209 is 9021200202122.

It can be written as a sum of positive squares in 4 ways, for example, as 104668425625 + 2107351595584 = 323525^2 + 1451672^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2212020021209 - 2⁴ = 2212020021193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212020021203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150245324 + ... + 150260045.

It is an arithmetic number, because the mean of its divisors is an integer number (293443493805).

Almost surely, 2^{2212020021209} is an apocalyptic number.

It is an amenable number.

2212020021209 is a deficient number, since it is larger than the sum of its proper divisors (135527929231).

2212020021209 is a wasteful number, since it uses less digits than its factorization.

2212020021209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300505819.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 2212020021209 in words is "two trillion, two hundred twelve billion, twenty million, twenty-one thousand, two hundred nine".