12021220222110 has 96 divisors (see below), whose sum is σ = 34674459730560. Its totient is φ = 2864841374400.

The previous prime is 12021220222091. The next prime is 12021220222111. The reversal of 12021220222110 is 1122202212021.

It is a happy number.

12021220222110 is a `hidden beast` number, since 1 + 20 + 212 + 202 + 221 + 10 = 666.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021220222111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102845376 + ... + 102962195.

It is an arithmetic number, because the mean of its divisors is an integer number (361192288860).

Almost surely, 2^{12021220222110} is an apocalyptic number.

12021220222110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021220222110 is an abundant number, since it is smaller than the sum of its proper divisors (22653239508450).

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

12021220222110 is a wasteful number, since it uses less digits than its factorization.

12021220222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205807654 (or 205807651 counting only the distinct ones).

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

Adding to 12021220222110 its reverse (1122202212021), we get a palindrome (13143422434131).

The spelling of 12021220222110 in words is "twelve trillion, twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred ten".