1212012249 has 16 divisors (see below), whose sum is σ = 1849184640. Its totient is φ = 691712640.

The previous prime is 1212012173. The next prime is 1212012251. The reversal of 1212012249 is 9422102121.

It is not a de Polignac number, because 1212012249 - 2⁷ = 1212012121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212012289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18682 + ... + 52659.

It is an arithmetic number, because the mean of its divisors is an integer number (115574040).

Almost surely, 2^1212012249 is an apocalyptic number.

It is an amenable number.

1212012249 is a deficient number, since it is larger than the sum of its proper divisors (637172391).

1212012249 is an equidigital number, since it uses as much as digits as its factorization.

1212012249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72160.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1212012249 is about 34813.9662922799. The cubic root of 1212012249 is about 1066.1926140360.

The spelling of 1212012249 in words is "one billion, two hundred twelve million, twelve thousand, two hundred forty-nine".