12102121110220 has 48 divisors (see below), whose sum is σ = 25896360426048. Its totient is φ = 4749073655040.

The previous prime is 12102121110161. The next prime is 12102121110227. The reversal of 12102121110220 is 2201112120121.

It is a super-2 number, since 2×12102121110220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102121110194 and 12102121110203.

It is not an unprimeable number, because it can be changed into a prime (12102121110227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11093425 + ... + 12135415.

It is an arithmetic number, because the mean of its divisors is an integer number (539507508876).

Almost surely, 2^{12102121110220} is an apocalyptic number.

12102121110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102121110220 is an abundant number, since it is smaller than the sum of its proper divisors (13794239315828).

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

12102121110220 is a wasteful number, since it uses less digits than its factorization.

12102121110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053010 (or 1053008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12102121110220 its reverse (2201112120121), we get a palindrome (14303233230341).

The spelling of 12102121110220 in words is "twelve trillion, one hundred two billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty".