12221220212010 has 32 divisors (see below), whose sum is σ = 32589920566080. Its totient is φ = 3258992056464.

The previous prime is 12221220211909. The next prime is 12221220212087. The reversal of 12221220212010 is 1021202212221.

It is a happy number.

12221220212010 is a `hidden beast` number, since 1 + 2 + 221 + 220 + 21 + 201 + 0 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22631889012 + ... + 22631889551.

It is an arithmetic number, because the mean of its divisors is an integer number (1018435017690).

Almost surely, 2^{12221220212010} is an apocalyptic number.

12221220212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221220212010 is an abundant number, since it is smaller than the sum of its proper divisors (20368700354070).

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

12221220212010 is a wasteful number, since it uses less digits than its factorization.

12221220212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45263778579 (or 45263778573 counting only the distinct ones).

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

Adding to 12221220212010 its reverse (1021202212221), we get a palindrome (13242422424231).

The spelling of 12221220212010 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, ten".