21033112330 has 8 divisors (see below), whose sum is σ = 37859602212. Its totient is φ = 8413244928.

The previous prime is 21033112319. The next prime is 21033112333. The reversal of 21033112330 is 3321133012.

It can be written as a sum of positive squares in 2 ways, for example, as 20562699609 + 470412721 = 143397^2 + 21689^2 .

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 = 21033112298 and 21033112307.

It is not an unprimeable number, because it can be changed into a prime (21033112333) 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, 1051655607 + ... + 1051655626.

Almost surely, 2^21033112330 is an apocalyptic number.

21033112330 is a deficient number, since it is larger than the sum of its proper divisors (16826489882).

21033112330 is a wasteful number, since it uses less digits than its factorization.

21033112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103311240.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21033112330 its reverse (3321133012), we get a palindrome (24354245342).

The spelling of 21033112330 in words is "twenty-one billion, thirty-three million, one hundred twelve thousand, three hundred thirty".