13221012442 has 16 divisors (see below), whose sum is σ = 21638938752. Its totient is φ = 6008285920.

The previous prime is 13221012379. The next prime is 13221012473. The reversal of 13221012442 is 24421012231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47958 + ... + 169534.

It is an arithmetic number, because the mean of its divisors is an integer number (1352433672).

Almost surely, 2^13221012442 is an apocalyptic number.

13221012442 is a deficient number, since it is larger than the sum of its proper divisors (8417926310).

13221012442 is a wasteful number, since it uses less digits than its factorization.

13221012442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126533.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 13221012442 its reverse (24421012231), we get a palindrome (37642024673).

The spelling of 13221012442 in words is "thirteen billion, two hundred twenty-one million, twelve thousand, four hundred forty-two".