202011022221209 has 4 divisors (see below), whose sum is σ = 202366050380340. Its totient is φ = 201655994062080.

The previous prime is 202011022221181. The next prime is 202011022221223. The reversal of 202011022221209 is 902122220110202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31953695617600 + 170057326603609 = 5652760^2 + 13040603^2 .

It is a cyclic number.

It is not a de Polignac number, because 202011022221209 - 2¹⁶ = 202011022155673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202011022221409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177514078712 + ... + 177514079849.

It is an arithmetic number, because the mean of its divisors is an integer number (50591512595085).

Almost surely, 2^{202011022221209} is an apocalyptic number.

It is an amenable number.

202011022221209 is a deficient number, since it is larger than the sum of its proper divisors (355028159131).

202011022221209 is an equidigital number, since it uses as much as digits as its factorization.

202011022221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355028159130.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 202011022221209 in words is "two hundred two trillion, eleven billion, twenty-two million, two hundred twenty-one thousand, two hundred nine".