1212443220430 has 32 divisors (see below), whose sum is σ = 2350327492800. Its totient is φ = 447661258752.

The previous prime is 1212443220427. The next prime is 1212443220449. The reversal of 1212443220430 is 340223442121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8210286 + ... + 8356654.

It is an arithmetic number, because the mean of its divisors is an integer number (73447734150).

Almost surely, 2^{1212443220430} is an apocalyptic number.

1212443220430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212443220430 is a deficient number, since it is larger than the sum of its proper divisors (1137884272370).

1212443220430 is a wasteful number, since it uses less digits than its factorization.

1212443220430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210108.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1212443220430 its reverse (340223442121), we get a palindrome (1552666662551).

The spelling of 1212443220430 in words is "one trillion, two hundred twelve billion, four hundred forty-three million, two hundred twenty thousand, four hundred thirty".