1212998227 has 8 divisors (see below), whose sum is σ = 1412440416. Its totient is φ = 1020095232.

The previous prime is 1212998221. The next prime is 1212998257. The reversal of 1212998227 is 7228992121.

It is a happy number.

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 1212998227 - 2⁷ = 1212998099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212998221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1634398 + ... + 1635139.

It is an arithmetic number, because the mean of its divisors is an integer number (176555052).

Almost surely, 2^1212998227 is an apocalyptic number.

1212998227 is a deficient number, since it is larger than the sum of its proper divisors (199442189).

1212998227 is an equidigital number, since it uses as much as digits as its factorization.

1212998227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3269597.

The product of its digits is 72576, while the sum is 43.

The square root of 1212998227 is about 34828.1240809780. The cubic root of 1212998227 is about 1066.4816533388.

The spelling of 1212998227 in words is "one billion, two hundred twelve million, nine hundred ninety-eight thousand, two hundred twenty-seven".