20021220210202 has 8 divisors (see below), whose sum is σ = 30099622258656. Its totient is φ = 9988012790652.

The previous prime is 20021220210179. The next prime is 20021220210209. The reversal of 20021220210202 is 20201202212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20021220210209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11298656118 + ... + 11298657889.

It is an arithmetic number, because the mean of its divisors is an integer number (3762452782332).

Almost surely, 2^{20021220210202} is an apocalyptic number.

20021220210202 is a deficient number, since it is larger than the sum of its proper divisors (10078402048454).

20021220210202 is a wasteful number, since it uses less digits than its factorization.

20021220210202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22597314452.

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

Adding to 20021220210202 its reverse (20201202212002), we get a palindrome (40222422422204).

The spelling of 20021220210202 in words is "twenty trillion, twenty-one billion, two hundred twenty million, two hundred ten thousand, two hundred two".