22003022021 has 8 divisors (see below), whose sum is σ = 23303726424. Its totient is φ = 20703029760.

The previous prime is 22003022011. The next prime is 22003022039. The reversal of 22003022021 is 12022030022.

It can be written as a sum of positive squares in 4 ways, for example, as 146652100 + 21856369921 = 12110^2 + 147839^2 .

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

It is not a de Polignac number, because 22003022021 - 2²⁶ = 21935913157 is a prime.

It is a super-2 number, since 2×22003022021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22003021987 and 22003022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22003022011) 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, 113750 + ... + 238631.

It is an arithmetic number, because the mean of its divisors is an integer number (2912965803).

Almost surely, 2^22003022021 is an apocalyptic number.

It is an amenable number.

22003022021 is a deficient number, since it is larger than the sum of its proper divisors (1300704403).

22003022021 is a wasteful number, since it uses less digits than its factorization.

22003022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356071.

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 22003022021 its reverse (12022030022), we get a palindrome (34025052043).

The spelling of 22003022021 in words is "twenty-two billion, three million, twenty-two thousand, twenty-one".