220120101221 has 8 divisors (see below), whose sum is σ = 224281107360. Its totient is φ = 215959383952.

The previous prime is 220120101211. The next prime is 220120101259. The reversal of 220120101221 is 122101021022.

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

It is a cyclic number.

It is not a de Polignac number, because 220120101221 - 2¹⁸ = 220119839077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220120101196 and 220120101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120101211) 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, 2049566 + ... + 2154288.

It is an arithmetic number, because the mean of its divisors is an integer number (28035138420).

Almost surely, 2^220120101221 is an apocalyptic number.

It is an amenable number.

220120101221 is a deficient number, since it is larger than the sum of its proper divisors (4161006139).

220120101221 is a wasteful number, since it uses less digits than its factorization.

220120101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144435.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220120101221 its reverse (122101021022), we get a palindrome (342221122243).

The spelling of 220120101221 in words is "two hundred twenty billion, one hundred twenty million, one hundred one thousand, two hundred twenty-one".