11421315205 has 8 divisors (see below), whose sum is σ = 13724128800. Its totient is φ = 9124685136.

The previous prime is 11421315193. The next prime is 11421315233. The reversal of 11421315205 is 50251312411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11421315205 - 2⁷ = 11421315077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11421315205.

It is a congruent number.

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, 1541815 + ... + 1549204.

It is an arithmetic number, because the mean of its divisors is an integer number (1715516100).

Almost surely, 2^11421315205 is an apocalyptic number.

It is an amenable number.

11421315205 is a deficient number, since it is larger than the sum of its proper divisors (2302813595).

11421315205 is an equidigital number, since it uses as much as digits as its factorization.

11421315205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091763.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11421315205 its reverse (50251312411), we get a palindrome (61672627616).

The spelling of 11421315205 in words is "eleven billion, four hundred twenty-one million, three hundred fifteen thousand, two hundred five".