220221021122121 has 8 divisors (see below), whose sum is σ = 309082134908320. Its totient is φ = 139086960708672.

The previous prime is 220221021122059. The next prime is 220221021122143. The reversal of 220221021122121 is 121221120122022.

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

It is not a de Polignac number, because 220221021122121 - 2¹⁸ = 220221020859977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220221021122321) by changing a digit.

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, 1931763343120 + ... + 1931763343233.

It is an arithmetic number, because the mean of its divisors is an integer number (38635266863540).

Almost surely, 2^{220221021122121} is an apocalyptic number.

It is an amenable number.

220221021122121 is a deficient number, since it is larger than the sum of its proper divisors (88861113786199).

220221021122121 is a wasteful number, since it uses less digits than its factorization.

220221021122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863526686375.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 220221021122121 its reverse (121221120122022), we get a palindrome (341442141244143).

The spelling of 220221021122121 in words is "two hundred twenty trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".