220221221020210 has 8 divisors (see below), whose sum is σ = 396398197836396. Its totient is φ = 88088488408080.

The previous prime is 220221221020153. The next prime is 220221221020217. The reversal of 220221221020210 is 12020122122022.

It can be written as a sum of positive squares in 2 ways, for example, as 194802008208201 + 25419212812009 = 13957149^2 + 5041747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (220221221020217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11011061051001 + ... + 11011061051020.

Almost surely, 2^{220221221020210} is an apocalyptic number.

220221221020210 is a deficient number, since it is larger than the sum of its proper divisors (176176976816186).

220221221020210 is a wasteful number, since it uses less digits than its factorization.

220221221020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022122102028.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220221221020210 its reverse (12020122122022), we get a palindrome (232241343142232).

The spelling of 220221221020210 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, twenty thousand, two hundred ten".