11216020556 has 12 divisors (see below), whose sum is σ = 21137884992. Its totient is φ = 5176624848.

The previous prime is 11216020499. The next prime is 11216020579. The reversal of 11216020556 is 65502061211.

It is a happy number.

It is a super-2 number, since 2×11216020556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107846300 + ... + 107846403.

It is an arithmetic number, because the mean of its divisors is an integer number (1761490416).

Almost surely, 2^11216020556 is an apocalyptic number.

It is an amenable number.

11216020556 is a deficient number, since it is larger than the sum of its proper divisors (9921864436).

11216020556 is a wasteful number, since it uses less digits than its factorization.

11216020556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215692720 (or 215692718 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 11216020556 its reverse (65502061211), we get a palindrome (76718081767).

The spelling of 11216020556 in words is "eleven billion, two hundred sixteen million, twenty thousand, five hundred fifty-six".