550556221204312 has 16 divisors (see below), whose sum is σ = 1032293496492000. Its totient is φ = 275277955473120.

The previous prime is 550556221204243. The next prime is 550556221204313. The reversal of 550556221204312 is 213402122655055.

It is a super-2 number, since 2×550556221204312² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550556221204313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546187 + ... + 33371962.

It is an arithmetic number, because the mean of its divisors is an integer number (64518343530750).

Almost surely, 2^{550556221204312} is an apocalyptic number.

It is an amenable number.

550556221204312 is a deficient number, since it is larger than the sum of its proper divisors (481737275287688).

550556221204312 is a wasteful number, since it uses less digits than its factorization.

550556221204312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38782266 (or 38782262 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

Adding to 550556221204312 its reverse (213402122655055), we get a palindrome (763958343859367).

The spelling of 550556221204312 in words is "five hundred fifty trillion, five hundred fifty-six billion, two hundred twenty-one million, two hundred four thousand, three hundred twelve".