21242233330 has 8 divisors (see below), whose sum is σ = 38236020012. Its totient is φ = 8496893328.

The previous prime is 21242233321. The next prime is 21242233333. The reversal of 21242233330 is 3333224212.

It can be written as a sum of positive squares in 2 ways, for example, as 20955168081 + 287065249 = 144759^2 + 16943^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21242233295 and 21242233304.

It is not an unprimeable number, because it can be changed into a prime (21242233333) 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, 1062111657 + ... + 1062111676.

Almost surely, 2^21242233330 is an apocalyptic number.

21242233330 is a deficient number, since it is larger than the sum of its proper divisors (16993786682).

21242233330 is a wasteful number, since it uses less digits than its factorization.

21242233330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124223340.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21242233330 its reverse (3333224212), we get a palindrome (24575457542).

The spelling of 21242233330 in words is "twenty-one billion, two hundred forty-two million, two hundred thirty-three thousand, three hundred thirty".