1212343042411 has 4 divisors (see below), whose sum is σ = 1212678596272. Its totient is φ = 1212007488552.

The previous prime is 1212343042373. The next prime is 1212343042429. The reversal of 1212343042411 is 1142403432121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212343042411 - 2³¹ = 1210195558763 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212343042411.

It is not an unprimeable number, because it can be changed into a prime (1212343042441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167771511 + ... + 167778736.

It is an arithmetic number, because the mean of its divisors is an integer number (303169649068).

Almost surely, 2^{1212343042411} is an apocalyptic number.

1212343042411 is a deficient number, since it is larger than the sum of its proper divisors (335553861).

1212343042411 is an equidigital number, since it uses as much as digits as its factorization.

1212343042411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335553860.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1212343042411 its reverse (1142403432121), we get a palindrome (2354746474532).

The spelling of 1212343042411 in words is "one trillion, two hundred twelve billion, three hundred forty-three million, forty-two thousand, four hundred eleven".