22222035221 has 8 divisors (see below), whose sum is σ = 22476110040. Its totient is φ = 21968058112.

The previous prime is 22222035211. The next prime is 22222035287. The reversal of 22222035221 is 12253022222.

It can be written as a sum of positive squares in 4 ways, for example, as 64224196 + 22157811025 = 8014^2 + 148855^2 .

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 22222035221 - 2¹⁴ = 22222018837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222035211) 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, 495881 + ... + 538833.

It is an arithmetic number, because the mean of its divisors is an integer number (2809513755).

Almost surely, 2^22222035221 is an apocalyptic number.

It is an amenable number.

22222035221 is a deficient number, since it is larger than the sum of its proper divisors (254074819).

22222035221 is an equidigital number, since it uses as much as digits as its factorization.

22222035221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48855.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22222035221 its reverse (12253022222), we get a palindrome (34475057443).

The spelling of 22222035221 in words is "twenty-two billion, two hundred twenty-two million, thirty-five thousand, two hundred twenty-one".