1213444011113 has 8 divisors (see below), whose sum is σ = 1266493797576. Its totient is φ = 1161511062400.

The previous prime is 1213444011103. The next prime is 1213444011119. The reversal of 1213444011113 is 3111104443121.

It can be written as a sum of positive squares in 4 ways, for example, as 148446842944 + 1064997168169 = 385288^2 + 1031987^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213444011113 - 2⁴ = 1213444011097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1213444011119) 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 7 ways as a sum of consecutive naturals, for example, 279207218 + ... + 279211563.

It is an arithmetic number, because the mean of its divisors is an integer number (158311724697).

Almost surely, 2^{1213444011113} is an apocalyptic number.

It is an amenable number.

1213444011113 is a deficient number, since it is larger than the sum of its proper divisors (53049786463).

1213444011113 is an equidigital number, since it uses as much as digits as its factorization.

1213444011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558418875.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 1213444011113 its reverse (3111104443121), we get a palindrome (4324548454234).

The spelling of 1213444011113 in words is "one trillion, two hundred thirteen billion, four hundred forty-four million, eleven thousand, one hundred thirteen".