11220113555 has 8 divisors (see below), whose sum is σ = 15387584352. Its totient is φ = 7693792128.

The previous prime is 11220113537. The next prime is 11220113563. The reversal of 11220113555 is 55531102211.

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 11220113555 - 2²² = 11215919251 is a prime.

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, 160287302 + ... + 160287371.

It is an arithmetic number, because the mean of its divisors is an integer number (1923448044).

Almost surely, 2^11220113555 is an apocalyptic number.

11220113555 is a deficient number, since it is larger than the sum of its proper divisors (4167470797).

11220113555 is an equidigital number, since it uses as much as digits as its factorization.

11220113555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320574685.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 11220113555 its reverse (55531102211), we get a palindrome (66751215766).

The spelling of 11220113555 in words is "eleven billion, two hundred twenty million, one hundred thirteen thousand, five hundred fifty-five".