20041221202 has 4 divisors (see below), whose sum is σ = 30061831806. Its totient is φ = 10020610600.

The previous prime is 20041221121. The next prime is 20041221209. The reversal of 20041221202 is 20212214002.

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., 18804362641 + 1236858561 = 137129^2 + 35169^2 .

It is not an unprimeable number, because it can be changed into a prime (20041221209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010305299 + ... + 5010305302.

Almost surely, 2^20041221202 is an apocalyptic number.

20041221202 is a deficient number, since it is larger than the sum of its proper divisors (10020610604).

20041221202 is a wasteful number, since it uses less digits than its factorization.

20041221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020610603.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20041221202 its reverse (20212214002), we get a palindrome (40253435204).

The spelling of 20041221202 in words is "twenty billion, forty-one million, two hundred twenty-one thousand, two hundred two".