11221245215 has 8 divisors (see below), whose sum is σ = 13584658608. Its totient is φ = 8897553280.

The previous prime is 11221245209. The next prime is 11221245229. The reversal of 11221245215 is 51254212211.

It is a happy number.

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

It is not a de Polignac number, because 11221245215 - 2¹⁶ = 11221179679 is a prime.

It is a Duffinian number.

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, 9929741 + ... + 9930870.

It is an arithmetic number, because the mean of its divisors is an integer number (1698082326).

Almost surely, 2^11221245215 is an apocalyptic number.

11221245215 is a deficient number, since it is larger than the sum of its proper divisors (2363413393).

11221245215 is a wasteful number, since it uses less digits than its factorization.

11221245215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19860729.

The product of its digits is 1600, while the sum is 26.

Adding to 11221245215 its reverse (51254212211), we get a palindrome (62475457426).

The spelling of 11221245215 in words is "eleven billion, two hundred twenty-one million, two hundred forty-five thousand, two hundred fifteen".