1227105550 has 48 divisors (see below), whose sum is σ = 2570264064. Its totient is φ = 431820000.

The previous prime is 1227105527. The next prime is 1227105559. The reversal of 1227105550 is 555017221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227105559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18936 + ... + 53035.

It is an arithmetic number, because the mean of its divisors is an integer number (53547168).

Almost surely, 2^1227105550 is an apocalyptic number.

1227105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1227105550 is an abundant number, since it is smaller than the sum of its proper divisors (1343158514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1227105550 is a wasteful number, since it uses less digits than its factorization.

1227105550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72025 (or 72020 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 1227105550 is about 35030.0663716185. The cubic root of 1227105550 is about 1070.6001669842.

The spelling of 1227105550 in words is "one billion, two hundred twenty-seven million, one hundred five thousand, five hundred fifty".