1225210066 has 8 divisors (see below), whose sum is σ = 1839844080. Its totient is φ = 611928708.

The previous prime is 1225210037. The next prime is 1225210073. The reversal of 1225210066 is 6600125221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1225210066² = 3002279411655448712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225210066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335896 + ... + 339523.

It is an arithmetic number, because the mean of its divisors is an integer number (229980510).

Almost surely, 2^1225210066 is an apocalyptic number.

1225210066 is a deficient number, since it is larger than the sum of its proper divisors (614634014).

1225210066 is an equidigital number, since it uses as much as digits as its factorization.

1225210066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676328.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1225210066 is about 35003.0008142159. Note that the first 3 decimals coincide. The cubic root of 1225210066 is about 1070.0486384272.

Adding to 1225210066 its reverse (6600125221), we get a palindrome (7825335287).

The spelling of 1225210066 in words is "one billion, two hundred twenty-five million, two hundred ten thousand, sixty-six".