13221453542 has 8 divisors (see below), whose sum is σ = 21635105832. Its totient is φ = 6009751600.

The previous prime is 13221453533. The next prime is 13221453559. The reversal of 13221453542 is 24535412231.

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 = 13221453499 and 13221453508.

It is a congruent number.

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, 300487559 + ... + 300487602.

It is an arithmetic number, because the mean of its divisors is an integer number (2704388229).

Almost surely, 2^13221453542 is an apocalyptic number.

13221453542 is a deficient number, since it is larger than the sum of its proper divisors (8413652290).

13221453542 is a wasteful number, since it uses less digits than its factorization.

13221453542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600975174.

The product of its digits is 28800, while the sum is 32.

Adding to 13221453542 its reverse (24535412231), we get a palindrome (37756865773).

The spelling of 13221453542 in words is "thirteen billion, two hundred twenty-one million, four hundred fifty-three thousand, five hundred forty-two".