202220126 has 4 divisors (see below), whose sum is σ = 303330192. Its totient is φ = 101110062.

The previous prime is 202220107. The next prime is 202220129. The reversal of 202220126 is 621022202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621022202 = 2 ⋅310511101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220129) 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, 50555030 + ... + 50555033.

It is an arithmetic number, because the mean of its divisors is an integer number (75832548).

Almost surely, 2^202220126 is an apocalyptic number.

202220126 is a deficient number, since it is larger than the sum of its proper divisors (101110066).

202220126 is a wasteful number, since it uses less digits than its factorization.

202220126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101110065.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 202220126 is about 14220.4123006332. The cubic root of 202220126 is about 586.9594857242.

Adding to 202220126 its reverse (621022202), we get a palindrome (823242328).

The spelling of 202220126 in words is "two hundred two million, two hundred twenty thousand, one hundred twenty-six".