12102222220020 has 72 divisors (see below), whose sum is σ = 36953187223680. Its totient is φ = 3205886673600.

The previous prime is 12102222219977. The next prime is 12102222220043. The reversal of 12102222220020 is 2002222220121.

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 = 12102222219975 and 12102222220002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222603840 + ... + 222658199.

It is an arithmetic number, because the mean of its divisors is an integer number (513238711440).

Almost surely, 2^{12102222220020} is an apocalyptic number.

12102222220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102222220020 is an abundant number, since it is smaller than the sum of its proper divisors (24850965003660).

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

12102222220020 is a wasteful number, since it uses less digits than its factorization.

12102222220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445262205 (or 445262200 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12102222220020 its reverse (2002222220121), we get a palindrome (14104444440141).

The spelling of 12102222220020 in words is "twelve trillion, one hundred two billion, two hundred twenty-two million, two hundred twenty thousand, twenty".