220111120021221 has 24 divisors (see below), whose sum is σ = 373521900644256. Its totient is φ = 123139088123040.

The previous prime is 220111120021213. The next prime is 220111120021241. The reversal of 220111120021221 is 122120021111022.

220111120021221 is a `hidden beast` number, since 220 + 1 + 1 + 1 + 1 + 200 + 21 + 221 = 666.

220111120021221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220111120021221 - 2³ = 220111120021213 is a prime.

It is a super-3 number, since 3×220111120021221³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220111120021194 and 220111120021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220111120021211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85513254355 + ... + 85513256928.

It is an arithmetic number, because the mean of its divisors is an integer number (15563412526844).

Almost surely, 2^{220111120021221} is an apocalyptic number.

It is an amenable number.

220111120021221 is a deficient number, since it is larger than the sum of its proper divisors (153410780623035).

220111120021221 is a wasteful number, since it uses less digits than its factorization.

220111120021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171026511313 (or 171026511310 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220111120021221 its reverse (122120021111022), we get a palindrome (342231141132243).

The spelling of 220111120021221 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty million, twenty-one thousand, two hundred twenty-one".