20442402202 has 4 divisors (see below), whose sum is σ = 30663603306. Its totient is φ = 10221201100.

The previous prime is 20442402191. The next prime is 20442402221. The reversal of 20442402202 is 20220424402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20220424402 = 2 ⋅10110212201.

It can be written as a sum of positive squares in only one way, i.e., 14796532881 + 5645869321 = 121641^2 + 75139^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110600549 + ... + 5110600552.

Almost surely, 2^20442402202 is an apocalyptic number.

20442402202 is a deficient number, since it is larger than the sum of its proper divisors (10221201104).

20442402202 is a wasteful number, since it uses less digits than its factorization.

20442402202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221201103.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20442402202 its reverse (20220424402), we get a palindrome (40662826604).

The spelling of 20442402202 in words is "twenty billion, four hundred forty-two million, four hundred two thousand, two hundred two".