202122212110020 has 144 divisors (see below), whose sum is σ = 630691680440640. Its totient is φ = 52357797474048.

The previous prime is 202122212109967. The next prime is 202122212110033. The reversal of 202122212110020 is 20011212221202.

It is a happy number.

202122212110020 is a `hidden beast` number, since 2 + 0 + 212 + 221 + 211 + 0 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 202122212109975 and 202122212110002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20391742 + ... + 28636821.

Almost surely, 2^{202122212110020} is an apocalyptic number.

202122212110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202122212110020 is an abundant number, since it is smaller than the sum of its proper divisors (428569468330620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202122212110020 is a wasteful number, since it uses less digits than its factorization.

202122212110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49029234 (or 49029229 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202122212110020 its reverse (20011212221202), we get a palindrome (222133424331222).

The spelling of 202122212110020 in words is "two hundred two trillion, one hundred twenty-two billion, two hundred twelve million, one hundred ten thousand, twenty".