1212455432343 has 16 divisors (see below), whose sum is σ = 1687517362016. Its totient is φ = 773564826240.

The previous prime is 1212455432339. The next prime is 1212455432351. The reversal of 1212455432343 is 3432345542121.

It is a happy number.

It is not a de Polignac number, because 1212455432343 - 2² = 1212455432339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212455432743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89526196 + ... + 89539737.

It is an arithmetic number, because the mean of its divisors is an integer number (105469835126).

Almost surely, 2^{1212455432343} is an apocalyptic number.

1212455432343 is a deficient number, since it is larger than the sum of its proper divisors (475061929673).

1212455432343 is a wasteful number, since it uses less digits than its factorization.

1212455432343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179066034.

The product of its digits is 345600, while the sum is 39.

The spelling of 1212455432343 in words is "one trillion, two hundred twelve billion, four hundred fifty-five million, four hundred thirty-two thousand, three hundred forty-three".