1212142143443 has 32 divisors (see below), whose sum is σ = 1549554209280. Its totient is φ = 920624544000.

The previous prime is 1212142143431. The next prime is 1212142143469. The reversal of 1212142143443 is 3443412412121.

It is a de Polignac number, because none of the positive numbers 2^k-1212142143443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212142143413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3195248 + ... + 3554418.

It is an arithmetic number, because the mean of its divisors is an integer number (48423569040).

Almost surely, 2^{1212142143443} is an apocalyptic number.

1212142143443 is a deficient number, since it is larger than the sum of its proper divisors (337412065837).

1212142143443 is a wasteful number, since it uses less digits than its factorization.

1212142143443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360299.

The product of its digits is 18432, while the sum is 32.

Adding to 1212142143443 its reverse (3443412412121), we get a palindrome (4655554555564).

The spelling of 1212142143443 in words is "one trillion, two hundred twelve billion, one hundred forty-two million, one hundred forty-three thousand, four hundred forty-three".