202112220209 has 16 divisors (see below), whose sum is σ = 212223037440. Its totient is φ = 192227564880.

The previous prime is 202112220199. The next prime is 202112220221. The reversal of 202112220209 is 902022211202.

It is a de Polignac number, because none of the positive numbers 2^k-202112220209 is a prime.

It is a super-2 number, since 2×202112220209² (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 (202112220229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8406884 + ... + 8430890.

It is an arithmetic number, because the mean of its divisors is an integer number (13263939840).

Almost surely, 2^202112220209 is an apocalyptic number.

It is an amenable number.

202112220209 is a deficient number, since it is larger than the sum of its proper divisors (10110817231).

202112220209 is a wasteful number, since it uses less digits than its factorization.

202112220209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28700.

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

The spelling of 202112220209 in words is "two hundred two billion, one hundred twelve million, two hundred twenty thousand, two hundred nine".