12021114550 has 48 divisors (see below), whose sum is σ = 22677164640. Its totient is φ = 4740503040.

The previous prime is 12021114533. The next prime is 12021114563. The reversal of 12021114550 is 5541112021.

12021114550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1174254 + ... + 1184446.

It is an arithmetic number, because the mean of its divisors is an integer number (472440930).

Almost surely, 2^12021114550 is an apocalyptic number.

12021114550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021114550 is a deficient number, since it is larger than the sum of its proper divisors (10656050090).

12021114550 is a wasteful number, since it uses less digits than its factorization.

12021114550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10537 (or 10532 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 12021114550 its reverse (5541112021), we get a palindrome (17562226571).

The spelling of 12021114550 in words is "twelve billion, twenty-one million, one hundred fourteen thousand, five hundred fifty".