22122122012221 has 8 divisors (see below), whose sum is σ = 27580827443904. Its totient is φ = 17238017152320.

The previous prime is 22122122012213. The next prime is 22122122012311. The reversal of 22122122012221 is 12221022122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22122122012221 - 2³ = 22122122012213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122122012192 and 22122122012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122122012821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143650142860 + ... + 143650143013.

It is an arithmetic number, because the mean of its divisors is an integer number (3447603430488).

Almost surely, 2^{22122122012221} is an apocalyptic number.

It is an amenable number.

22122122012221 is a deficient number, since it is larger than the sum of its proper divisors (5458705431683).

22122122012221 is a wasteful number, since it uses less digits than its factorization.

22122122012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287300285891.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22122122012221 its reverse (12221022122122), we get a palindrome (34343144134343).

The spelling of 22122122012221 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twenty-two million, twelve thousand, two hundred twenty-one".