220120011221210 has 16 divisors (see below), whose sum is σ = 396548137587816. Its totient is φ = 87974200624128.

The previous prime is 220120011221191. The next prime is 220120011221273. The reversal of 220120011221210 is 12122110021022.

It can be written as a sum of positive squares in 4 ways, for example, as 199383126255481 + 20736884965729 = 14120309^2 + 4553777^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9225470519 + ... + 9225494378.

Almost surely, 2^{220120011221210} is an apocalyptic number.

220120011221210 is a deficient number, since it is larger than the sum of its proper divisors (176428126366606).

220120011221210 is a wasteful number, since it uses less digits than its factorization.

220120011221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18450966097.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220120011221210 its reverse (12122110021022), we get a palindrome (232242121242232).

The spelling of 220120011221210 in words is "two hundred twenty trillion, one hundred twenty billion, eleven million, two hundred twenty-one thousand, two hundred ten".