13021021232 has 10 divisors (see below), whose sum is σ = 25228228668. Its totient is φ = 6510510608.

The previous prime is 13021021219. The next prime is 13021021243. The reversal of 13021021232 is 23212012031.

It is a self number, because there is not a number n which added to its sum of digits gives 13021021232.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406906898 + ... + 406906929.

Almost surely, 2^13021021232 is an apocalyptic number.

It is an amenable number.

13021021232 is a deficient number, since it is larger than the sum of its proper divisors (12207207436).

13021021232 is an equidigital number, since it uses as much as digits as its factorization.

13021021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813813835 (or 813813829 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13021021232 its reverse (23212012031), we get a palindrome (36233033263).

The spelling of 13021021232 in words is "thirteen billion, twenty-one million, twenty-one thousand, two hundred thirty-two".