1222221444210 has 48 divisors (see below), whose sum is σ = 3422220047064. Its totient is φ = 300854509056.

The previous prime is 1222221444167. The next prime is 1222221444211. The reversal of 1222221444210 is 124441222221.

1222221444210 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 2 + 2 + 1 + 444 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 418812182649 + 803409261561 = 647157^2 + 896331^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222221444211) by changing a digit.

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, 522315687 + ... + 522318026.

Almost surely, 2^{1222221444210} is an apocalyptic number.

1222221444210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222221444210 is an abundant number, since it is smaller than the sum of its proper divisors (2199998602854).

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

1222221444210 is a wasteful number, since it uses less digits than its factorization.

1222221444210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044633739 (or 1044633736 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 1222221444210 its reverse (124441222221), we get a palindrome (1346662666431).

The spelling of 1222221444210 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, four hundred forty-four thousand, two hundred ten".