220121021120221 has 32 divisors (see below), whose sum is σ = 257792744240640. Its totient is φ = 186059658064896.

The previous prime is 220121021120141. The next prime is 220121021120233. The reversal of 220121021120221 is 122021120121022.

It is a cyclic number.

It is not a de Polignac number, because 220121021120221 - 2⁹ = 220121021119709 is a prime.

It is a super-3 number, since 3×220121021120221³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121021120261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189774190 + ... + 190930576.

It is an arithmetic number, because the mean of its divisors is an integer number (8056023257520).

Almost surely, 2^{220121021120221} is an apocalyptic number.

It is an amenable number.

220121021120221 is a deficient number, since it is larger than the sum of its proper divisors (37671723120419).

220121021120221 is a wasteful number, since it uses less digits than its factorization.

220121021120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179733.

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

Adding to 220121021120221 its reverse (122021120121022), we get a palindrome (342142141241243).

The spelling of 220121021120221 in words is "two hundred twenty trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty thousand, two hundred twenty-one".