22222122022221 has 32 divisors (see below), whose sum is σ = 32665903724160. Its totient is φ = 13325298432000.

The previous prime is 22222122022159. The next prime is 22222122022253. The reversal of 22222122022221 is 12222022122222.

It is not a de Polignac number, because 22222122022221 - 2¹¹ = 22222122020173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22222122022191 and 22222122022200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222122022271) 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, 2449845 + ... + 7102533.

It is an arithmetic number, because the mean of its divisors is an integer number (1020809491380).

Almost surely, 2^{22222122022221} is an apocalyptic number.

It is an amenable number.

22222122022221 is a deficient number, since it is larger than the sum of its proper divisors (10443781701939).

22222122022221 is a wasteful number, since it uses less digits than its factorization.

22222122022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654237.

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

Adding to 22222122022221 its reverse (12222022122222), we get a palindrome (34444144144443).

The spelling of 22222122022221 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, two hundred twenty-one".