12211021222110 has 24 divisors (see below), whose sum is σ = 31748655177720. Its totient is φ = 3256272325872.

The previous prime is 12211021222093. The next prime is 12211021222151. The reversal of 12211021222110 is 1122212011221.

12211021222110 is a `hidden beast` number, since 1 + 221 + 1 + 0 + 212 + 221 + 10 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67839006700 + ... + 67839006879.

It is an arithmetic number, because the mean of its divisors is an integer number (1322860632405).

Almost surely, 2^{12211021222110} is an apocalyptic number.

12211021222110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211021222110 is an abundant number, since it is smaller than the sum of its proper divisors (19537633955610).

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

12211021222110 is a wasteful number, since it uses less digits than its factorization.

12211021222110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135678013592 (or 135678013589 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211021222110 its reverse (1122212011221), we get a palindrome (13333233233331).

The spelling of 12211021222110 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty-two thousand, one hundred ten".