11216020555 has 8 divisors (see below), whose sum is σ = 14250943872. Its totient is φ = 8445003648.

The previous prime is 11216020499. The next prime is 11216020579. The reversal of 11216020555 is 55502061211.

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 11216020555 - 2¹⁵ = 11215987787 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, 65976507 + ... + 65976676.

It is an arithmetic number, because the mean of its divisors is an integer number (1781367984).

Almost surely, 2^11216020555 is an apocalyptic number.

11216020555 is a deficient number, since it is larger than the sum of its proper divisors (3034923317).

11216020555 is a wasteful number, since it uses less digits than its factorization.

11216020555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131953205.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 11216020555 its reverse (55502061211), we get a palindrome (66718081766).

The spelling of 11216020555 in words is "eleven billion, two hundred sixteen million, twenty thousand, five hundred fifty-five".