202202081 has 4 divisors (see below), whose sum is σ = 204165312. Its totient is φ = 200238852.

The previous prime is 202202059. The next prime is 202202111. The reversal of 202202081 is 180202202.

202202081 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: 180202202 = 2 ⋅90101101.

It is a cyclic number.

It is not a de Polignac number, because 202202081 - 2⁶ = 202202017 is a prime.

It is a super-2 number, since 2×202202081² = 81771363121461122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202202041) 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, 981461 + ... + 981666.

It is an arithmetic number, because the mean of its divisors is an integer number (51041328).

Almost surely, 2^202202081 is an apocalyptic number.

It is an amenable number.

202202081 is a deficient number, since it is larger than the sum of its proper divisors (1963231).

202202081 is a wasteful number, since it uses less digits than its factorization.

202202081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963230.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 202202081 is about 14219.7778112037. Note that the first 3 decimals coincide. The cubic root of 202202081 is about 586.9420262043.

Adding to 202202081 its reverse (180202202), we get a palindrome (382404283).

The spelling of 202202081 in words is "two hundred two million, two hundred two thousand, eighty-one".