202806122 has 4 divisors (see below), whose sum is σ = 304209186. Its totient is φ = 101403060.

The previous prime is 202806083. The next prime is 202806127. The reversal of 202806122 is 221608202.

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

It can be written as a sum of positive squares in only one way, i.e., 182547121 + 20259001 = 13511^2 + 4501^2 .

It is a super-2 number, since 2×202806122² = 82260646241357768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202806127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50701529 + ... + 50701532.

Almost surely, 2^202806122 is an apocalyptic number.

202806122 is a deficient number, since it is larger than the sum of its proper divisors (101403064).

202806122 is a wasteful number, since it uses less digits than its factorization.

202806122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101403063.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 202806122 is about 14241.0014395056. The cubic root of 202806122 is about 587.5259051200.

The spelling of 202806122 in words is "two hundred two million, eight hundred six thousand, one hundred twenty-two".