11221515055 has 8 divisors (see below), whose sum is σ = 13930156800. Its totient is φ = 8667652896.

The previous prime is 11221515037. The next prime is 11221515073. The reversal of 11221515055 is 55051512211.

It is an interprime number because it is at equal distance from previous prime (11221515037) and next prime (11221515073).

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 11221515055 - 2⁹ = 11221514543 is a prime.

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, 38694735 + ... + 38695024.

It is an arithmetic number, because the mean of its divisors is an integer number (1741269600).

Almost surely, 2^11221515055 is an apocalyptic number.

11221515055 is a deficient number, since it is larger than the sum of its proper divisors (2708641745).

11221515055 is an equidigital number, since it uses as much as digits as its factorization.

11221515055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77389793.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 11221515055 in words is "eleven billion, two hundred twenty-one million, five hundred fifteen thousand, fifty-five".