1228117205 has 8 divisors (see below), whose sum is σ = 1684275072. Its totient is φ = 842137488.

The previous prime is 1228117199. The next prime is 1228117211. The reversal of 1228117205 is 5027118221.

It is an interprime number because it is at equal distance from previous prime (1228117199) and next prime (1228117211).

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 1228117205 - 2¹² = 1228113109 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 17544497 + ... + 17544566.

It is an arithmetic number, because the mean of its divisors is an integer number (210534384).

Almost surely, 2^1228117205 is an apocalyptic number.

It is an amenable number.

1228117205 is a deficient number, since it is larger than the sum of its proper divisors (456157867).

1228117205 is an equidigital number, since it uses as much as digits as its factorization.

1228117205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35089075.

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1228117205 is about 35044.5032066371. The cubic root of 1228117205 is about 1070.8942955834.

The spelling of 1228117205 in words is "one billion, two hundred twenty-eight million, one hundred seventeen thousand, two hundred five".