220022222221221 has 16 divisors (see below), whose sum is σ = 335294116105728. Its totient is φ = 125718674713200.

The previous prime is 220022222221213. The next prime is 220022222221283. The reversal of 220022222221221 is 122122222220022.

It is not a de Polignac number, because 220022222221221 - 2³ = 220022222221213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220022222221191 and 220022222221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220022222221211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345900235 + ... + 346535736.

It is an arithmetic number, because the mean of its divisors is an integer number (20955882256608).

Almost surely, 2^{220022222221221} is an apocalyptic number.

220022222221221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220022222221221 is a deficient number, since it is larger than the sum of its proper divisors (115271893884507).

220022222221221 is a wasteful number, since it uses less digits than its factorization.

220022222221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692451112.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 220022222221221 its reverse (122122222220022), we get a palindrome (342144444441243).

The spelling of 220022222221221 in words is "two hundred twenty trillion, twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".