202202009 has 4 divisors (see below), whose sum is σ = 212844240. Its totient is φ = 191559780.

The previous prime is 202201981. The next prime is 202202017. The reversal of 202202009 is 900202202.

It is a happy number.

202202009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900202202 = 2 ⋅450101101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202202009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202202059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5321087 + ... + 5321124.

It is an arithmetic number, because the mean of its divisors is an integer number (53211060).

Almost surely, 2^202202009 is an apocalyptic number.

It is an amenable number.

202202009 is a deficient number, since it is larger than the sum of its proper divisors (10642231).

202202009 is a wasteful number, since it uses less digits than its factorization.

202202009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10642230.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 202202009 is about 14219.7752795183. The cubic root of 202202009 is about 586.9419565383.

The spelling of 202202009 in words is "two hundred two million, two hundred two thousand, nine".