220121221122010 has 64 divisors (see below), whose sum is σ = 451894044655872. Its totient is φ = 76581483618816.

The previous prime is 220121221121993. The next prime is 220121221122041. The reversal of 220121221122010 is 10221122121022.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549196219 + ... + 549596878.

It is an arithmetic number, because the mean of its divisors is an integer number (7060844447748).

Almost surely, 2^{220121221122010} is an apocalyptic number.

220121221122010 is an abundant number, since it is smaller than the sum of its proper divisors (231772823533862).

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

220121221122010 is a wasteful number, since it uses less digits than its factorization.

220121221122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098793207.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220121221122010 its reverse (10221122121022), we get a palindrome (230342343243032).

The spelling of 220121221122010 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, ten".