22130302021 has 4 divisors (see below), whose sum is σ = 22225282092. Its totient is φ = 22035321952.

The previous prime is 22130301997. The next prime is 22130302037. The reversal of 22130302021 is 12020303122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6073864225 + 16056437796 = 77935^2 + 126714^2 .

It is a cyclic number.

It is not a de Polignac number, because 22130302021 - 2¹¹ = 22130299973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22130301986 and 22130302004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22430302021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47489686 + ... + 47490151.

It is an arithmetic number, because the mean of its divisors is an integer number (5556320523).

Almost surely, 2^22130302021 is an apocalyptic number.

It is an amenable number.

22130302021 is a deficient number, since it is larger than the sum of its proper divisors (94980071).

22130302021 is an equidigital number, since it uses as much as digits as its factorization.

22130302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94980070.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 22130302021 its reverse (12020303122), we get a palindrome (34150605143).

The spelling of 22130302021 in words is "twenty-two billion, one hundred thirty million, three hundred two thousand, twenty-one".