201222110120020 has 72 divisors (see below), whose sum is σ = 464478623465472. Its totient is φ = 73170923770560.

The previous prime is 201222110119991. The next prime is 201222110120051. The reversal of 201222110120020 is 20021011222102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201222110119976 and 201222110120003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270298029 + ... + 271041451.

It is an arithmetic number, because the mean of its divisors is an integer number (6451091992576).

Almost surely, 2^{201222110120020} is an apocalyptic number.

201222110120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201222110120020 is an abundant number, since it is smaller than the sum of its proper divisors (263256513345452).

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

201222110120020 is a wasteful number, since it uses less digits than its factorization.

201222110120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855301 (or 855288 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201222110120020 its reverse (20021011222102), we get a palindrome (221243121342122).

The spelling of 201222110120020 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred ten million, one hundred twenty thousand, twenty".