21201032330 has 8 divisors (see below), whose sum is σ = 38161858212. Its totient is φ = 8480412928.

The previous prime is 21201032317. The next prime is 21201032341. The reversal of 21201032330 is 3323010212.

It can be written as a sum of positive squares in 2 ways, for example, as 20515692289 + 685340041 = 143233^2 + 26179^2 .

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 = 21201032299 and 21201032308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060051607 + ... + 1060051626.

Almost surely, 2^21201032330 is an apocalyptic number.

21201032330 is a deficient number, since it is larger than the sum of its proper divisors (16960825882).

21201032330 is a wasteful number, since it uses less digits than its factorization.

21201032330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120103240.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21201032330 its reverse (3323010212), we get a palindrome (24524042542).

The spelling of 21201032330 in words is "twenty-one billion, two hundred one million, thirty-two thousand, three hundred thirty".