13220021330 has 8 divisors (see below), whose sum is σ = 23796038412. Its totient is φ = 5288008528.

The previous prime is 13220021329. The next prime is 13220021357. The reversal of 13220021330 is 3312002231.

It can be written as a sum of positive squares in 2 ways, for example, as 11965515769 + 1254505561 = 109387^2 + 35419^2 .

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 = 13220021299 and 13220021308.

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, 661001057 + ... + 661001076.

Almost surely, 2^13220021330 is an apocalyptic number.

13220021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13220021330 is a deficient number, since it is larger than the sum of its proper divisors (10576017082).

13220021330 is a wasteful number, since it uses less digits than its factorization.

13220021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322002140.

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

Adding to 13220021330 its reverse (3312002231), we get a palindrome (16532023561).

The spelling of 13220021330 in words is "thirteen billion, two hundred twenty million, twenty-one thousand, three hundred thirty".