222102120120020 has 72 divisors (see below), whose sum is σ = 542918139452640. Its totient is φ = 76099559538240.

The previous prime is 222102120120019. The next prime is 222102120120043. The reversal of 222102120120020 is 20021021201222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72514910 + ... + 75515669.

It is an arithmetic number, because the mean of its divisors is an integer number (7540529714620).

Almost surely, 2^{222102120120020} is an apocalyptic number.

222102120120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222102120120020 is an abundant number, since it is smaller than the sum of its proper divisors (320816019332620).

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

222102120120020 is a wasteful number, since it uses less digits than its factorization.

222102120120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148032133 (or 148032124 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222102120120020 its reverse (20021021201222), we get a palindrome (242123141321242).

The spelling of 222102120120020 in words is "two hundred twenty-two trillion, one hundred two billion, one hundred twenty million, one hundred twenty thousand, twenty".