13220021232232 has 8 divisors (see below), whose sum is σ = 24787539810450. Its totient is φ = 6610010616112.

The previous prime is 13220021232193. The next prime is 13220021232289. The reversal of 13220021232232 is 23223212002231.

It can be written as a sum of positive squares in only one way, i.e., 7889436086596 + 5330585145636 = 2808814^2 + 2308806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×13220021232232² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13220021232197 and 13220021232206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826251327007 + ... + 826251327022.

Almost surely, 2^{13220021232232} is an apocalyptic number.

It is an amenable number.

13220021232232 is a deficient number, since it is larger than the sum of its proper divisors (11567518578218).

13220021232232 is a wasteful number, since it uses less digits than its factorization.

13220021232232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652502654035 (or 1652502654031 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13220021232232 its reverse (23223212002231), we get a palindrome (36443233234463).

The spelling of 13220021232232 in words is "thirteen trillion, two hundred twenty billion, twenty-one million, two hundred thirty-two thousand, two hundred thirty-two".