202122443 has 4 divisors (see below), whose sum is σ = 205936128. Its totient is φ = 198308760.

The previous prime is 202122439. The next prime is 202122467. The reversal of 202122443 is 344221202.

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

It is a cyclic number.

It is not a de Polignac number, because 202122443 - 2² = 202122439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202122433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906763 + ... + 1906868.

It is an arithmetic number, because the mean of its divisors is an integer number (51484032).

Almost surely, 2^202122443 is an apocalyptic number.

202122443 is a deficient number, since it is larger than the sum of its proper divisors (3813685).

202122443 is an equidigital number, since it uses as much as digits as its factorization.

202122443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813684.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 202122443 is about 14216.9772807021. The cubic root of 202122443 is about 586.8649596927.

Adding to 202122443 its reverse (344221202), we get a palindrome (546343645).

The spelling of 202122443 in words is "two hundred two million, one hundred twenty-two thousand, four hundred forty-three".