22222102222221 has 16 divisors (see below), whose sum is σ = 32323162874688. Its totient is φ = 13467896950400.

The previous prime is 22222102222219. The next prime is 22222102222259. The reversal of 22222102222221 is 12222220122222.

It is a cyclic number.

It is not a de Polignac number, because 22222102222221 - 2¹ = 22222102222219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22222102222191 and 22222102222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222102222211) 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, 11304295 + ... + 13123691.

It is an arithmetic number, because the mean of its divisors is an integer number (2020197679668).

Almost surely, 2^{22222102222221} is an apocalyptic number.

It is an amenable number.

22222102222221 is a deficient number, since it is larger than the sum of its proper divisors (10101060652467).

22222102222221 is a wasteful number, since it uses less digits than its factorization.

22222102222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189532.

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

Adding to 22222102222221 its reverse (12222220122222), we get a palindrome (34444322344443).

The spelling of 22222102222221 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-one".