202222212209 has 4 divisors (see below), whose sum is σ = 202429196004. Its totient is φ = 202015228416.

The previous prime is 202222212167. The next prime is 202222212211. The reversal of 202222212209 is 902212222202.

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 143415962209 + 58806250000 = 378703^2 + 242500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202222212209 is a prime.

It is a super-2 number, since 2×202222212209² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202222212229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103490432 + ... + 103492385.

It is an arithmetic number, because the mean of its divisors is an integer number (50607299001).

Almost surely, 2^202222212209 is an apocalyptic number.

It is an amenable number.

202222212209 is a deficient number, since it is larger than the sum of its proper divisors (206983795).

202222212209 is an equidigital number, since it uses as much as digits as its factorization.

202222212209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206983794.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 202222212209 in words is "two hundred two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred nine".