22323030021 has 12 divisors (see below), whose sum is σ = 34141104972. Its totient is φ = 14006606976.

The previous prime is 22323030017. The next prime is 22323030047. The reversal of 22323030021 is 12003032322.

It is a happy number.

22323030021 is a `hidden beast` number, since 22 + 323 + 0 + 300 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18663384996 + 3659645025 = 136614^2 + 60495^2 .

It is not a de Polignac number, because 22323030021 - 2² = 22323030017 is a prime.

It is a super-3 number, since 3×22323030021³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22323029976 and 22323030003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22323030221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72950926 + ... + 72951231.

It is an arithmetic number, because the mean of its divisors is an integer number (2845092081).

Almost surely, 2^22323030021 is an apocalyptic number.

It is an amenable number.

22323030021 is a deficient number, since it is larger than the sum of its proper divisors (11818074951).

22323030021 is a wasteful number, since it uses less digits than its factorization.

22323030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145902180 (or 145902177 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 22323030021 its reverse (12003032322), we get a palindrome (34326062343).

The spelling of 22323030021 in words is "twenty-two billion, three hundred twenty-three million, thirty thousand, twenty-one".