22202232021 has 6 divisors (see below), whose sum is σ = 32069890710. Its totient is φ = 14801488008.

The previous prime is 22202232001. The next prime is 22202232029. The reversal of 22202232021 is 12023220222.

It can be written as a sum of positive squares in only one way, i.e., 12049452900 + 10152779121 = 109770^2 + 100761^2 .

It is not a de Polignac number, because 22202232021 - 2⁹ = 22202231509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22202231985 and 22202232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202232029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1233457326 + ... + 1233457343.

It is an arithmetic number, because the mean of its divisors is an integer number (5344981785).

Almost surely, 2^22202232021 is an apocalyptic number.

It is an amenable number.

22202232021 is a deficient number, since it is larger than the sum of its proper divisors (9867658689).

22202232021 is a wasteful number, since it uses less digits than its factorization.

22202232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466914675 (or 2466914672 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22202232021 its reverse (12023220222), we get a palindrome (34225452243).

The spelling of 22202232021 in words is "twenty-two billion, two hundred two million, two hundred thirty-two thousand, twenty-one".