22220135221 has 8 divisors (see below), whose sum is σ = 22548988224. Its totient is φ = 21891723840.

The previous prime is 22220135213. The next prime is 22220135263. The reversal of 22220135221 is 12253102222.

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 22220135221 - 2³ = 22220135213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22220135192 and 22220135201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220135321) 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, 8340 + ... + 210973.

It is an arithmetic number, because the mean of its divisors is an integer number (2818623528).

Almost surely, 2^22220135221 is an apocalyptic number.

It is an amenable number.

22220135221 is a deficient number, since it is larger than the sum of its proper divisors (328853003).

22220135221 is a wasteful number, since it uses less digits than its factorization.

22220135221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220811.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 22220135221 its reverse (12253102222), we get a palindrome (34473237443).

The spelling of 22220135221 in words is "twenty-two billion, two hundred twenty million, one hundred thirty-five thousand, two hundred twenty-one".