220000112021221 has 4 divisors (see below), whose sum is σ = 251428699452832. Its totient is φ = 188571524589612.

The previous prime is 220000112021219. The next prime is 220000112021227. The reversal of 220000112021221 is 122120211000022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220000112021221 - 2¹ = 220000112021219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220000112021195 and 220000112021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220000112021227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15714293715795 + ... + 15714293715808.

It is an arithmetic number, because the mean of its divisors is an integer number (62857174863208).

Almost surely, 2^{220000112021221} is an apocalyptic number.

It is an amenable number.

220000112021221 is a deficient number, since it is larger than the sum of its proper divisors (31428587431611).

220000112021221 is an equidigital number, since it uses as much as digits as its factorization.

220000112021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31428587431610.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220000112021221 its reverse (122120211000022), we get a palindrome (342120323021243).

The spelling of 220000112021221 in words is "two hundred twenty trillion, one hundred twelve million, twenty-one thousand, two hundred twenty-one".