220221220121210 has 128 divisors (see below), whose sum is σ = 496571260243968. Its totient is φ = 68313216960000.

The previous prime is 220221220121179. The next prime is 220221220121213. The reversal of 220221220121210 is 12121022122022.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220221220121213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153264110 + ... + 154694310.

It is an arithmetic number, because the mean of its divisors is an integer number (3879462970656).

Almost surely, 2^{220221220121210} is an apocalyptic number.

220221220121210 is an abundant number, since it is smaller than the sum of its proper divisors (276350040122758).

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

220221220121210 is a wasteful number, since it uses less digits than its factorization.

220221220121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431180.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 220221220121210 its reverse (12121022122022), we get a palindrome (232342242243232).

The spelling of 220221220121210 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred ten".