20442021202 has 4 divisors (see below), whose sum is σ = 30663031806. Its totient is φ = 10221010600.

The previous prime is 20442021191. The next prime is 20442021217. The reversal of 20442021202 is 20212024402.

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., 19110574081 + 1331447121 = 138241^2 + 36489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20442021202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110505299 + ... + 5110505302.

Almost surely, 2^20442021202 is an apocalyptic number.

20442021202 is a deficient number, since it is larger than the sum of its proper divisors (10221010604).

20442021202 is a wasteful number, since it uses less digits than its factorization.

20442021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221010603.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20442021202 its reverse (20212024402), we get a palindrome (40654045604).

The spelling of 20442021202 in words is "twenty billion, four hundred forty-two million, twenty-one thousand, two hundred two".