11115610221 has 8 divisors (see below), whose sum is σ = 14822820000. Its totient is φ = 7409403632.

The previous prime is 11115610183. The next prime is 11115610229. The reversal of 11115610221 is 12201651111.

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 11115610221 - 2⁹ = 11115609709 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115610229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224550 + ... + 269543.

It is an arithmetic number, because the mean of its divisors is an integer number (1852852500).

Almost surely, 2^11115610221 is an apocalyptic number.

It is an amenable number.

11115610221 is a deficient number, since it is larger than the sum of its proper divisors (3707209779).

11115610221 is an equidigital number, since it uses as much as digits as its factorization.

11115610221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501595.

The product of its (nonzero) digits is 120, while the sum is 21.

The spelling of 11115610221 in words is "eleven billion, one hundred fifteen million, six hundred ten thousand, two hundred twenty-one".