221120212220121 has 8 divisors (see below), whose sum is σ = 301683390316000. Its totient is φ = 143985254468832.

The previous prime is 221120212220119. The next prime is 221120212220153. The reversal of 221120212220121 is 121022212021122.

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

It is not a de Polignac number, because 221120212220121 - 2¹ = 221120212220119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221120212220111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857055085996 + ... + 857055086253.

It is an arithmetic number, because the mean of its divisors is an integer number (37710423789500).

Almost surely, 2^{221120212220121} is an apocalyptic number.

It is an amenable number.

221120212220121 is a deficient number, since it is larger than the sum of its proper divisors (80563178095879).

221120212220121 is a wasteful number, since it uses less digits than its factorization.

221120212220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714110172295.

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

Adding to 221120212220121 its reverse (121022212021122), we get a palindrome (342142424241243).

The spelling of 221120212220121 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-one".