1212120424 has 32 divisors (see below), whose sum is σ = 2453328000. Its totient is φ = 559717312.

The previous prime is 1212120389. The next prime is 1212120431. The reversal of 1212120424 is 4240212121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 108244 + ... + 118915.

It is an arithmetic number, because the mean of its divisors is an integer number (76666500).

Almost surely, 2^1212120424 is an apocalyptic number.

It is an amenable number.

1212120424 is an abundant number, since it is smaller than the sum of its proper divisors (1241207576).

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

1212120424 is a wasteful number, since it uses less digits than its factorization.

1212120424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227217 (or 227213 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1212120424 is about 34815.5198726085. The cubic root of 1212120424 is about 1066.2243331750.

Adding to 1212120424 its reverse (4240212121), we get a palindrome (5452332545).

The spelling of 1212120424 in words is "one billion, two hundred twelve million, one hundred twenty thousand, four hundred twenty-four".