1212011442413 has 4 divisors (see below), whose sum is σ = 1241572697148. Its totient is φ = 1182450187680.

The previous prime is 1212011442409. The next prime is 1212011442431. The reversal of 1212011442413 is 3142441102121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 599506421284 + 612505021129 = 774278^2 + 782627^2 .

It is not a de Polignac number, because 1212011442413 - 2² = 1212011442409 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 (1212011442463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14780627306 + ... + 14780627387.

It is an arithmetic number, because the mean of its divisors is an integer number (310393174287).

Almost surely, 2^{1212011442413} is an apocalyptic number.

It is an amenable number.

1212011442413 is a deficient number, since it is larger than the sum of its proper divisors (29561254735).

1212011442413 is an equidigital number, since it uses as much as digits as its factorization.

1212011442413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29561254734.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 1212011442413 its reverse (3142441102121), we get a palindrome (4354452544534).

The spelling of 1212011442413 in words is "one trillion, two hundred twelve billion, eleven million, four hundred forty-two thousand, four hundred thirteen".