22235030021 has 4 divisors (see below), whose sum is σ = 22252416000. Its totient is φ = 22217644044.

The previous prime is 22235030011. The next prime is 22235030047. The reversal of 22235030021 is 12003053222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22235030021 is a prime.

It is a super-3 number, since 3×22235030021³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22235029975 and 22235030002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22235030011) 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, 8691071 + ... + 8693628.

It is an arithmetic number, because the mean of its divisors is an integer number (5563104000).

Almost surely, 2^22235030021 is an apocalyptic number.

It is an amenable number.

22235030021 is a deficient number, since it is larger than the sum of its proper divisors (17385979).

22235030021 is a wasteful number, since it uses less digits than its factorization.

22235030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17385978.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 22235030021 its reverse (12003053222), we get a palindrome (34238083243).

The spelling of 22235030021 in words is "twenty-two billion, two hundred thirty-five million, thirty thousand, twenty-one".