11221615 has 8 divisors (see below), whose sum is σ = 14258160. Its totient is φ = 8449152.

The previous prime is 11221601. The next prime is 11221627. The reversal of 11221615 is 51612211.

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 11221615 - 2⁹ = 11221103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221592 and 11221601.

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, 65925 + ... + 66094.

It is an arithmetic number, because the mean of its divisors is an integer number (1782270).

Almost surely, 2^11221615 is an apocalyptic number.

11221615 is a deficient number, since it is larger than the sum of its proper divisors (3036545).

11221615 is a wasteful number, since it uses less digits than its factorization.

11221615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132041.

The product of its digits is 120, while the sum is 19.

The square root of 11221615 is about 3349.8679078435. The cubic root of 11221615 is about 223.8816272422.

Adding to 11221615 its reverse (51612211), we get a palindrome (62833826).

The spelling of 11221615 in words is "eleven million, two hundred twenty-one thousand, six hundred fifteen".