1213144413344 has 12 divisors (see below), whose sum is σ = 2388378063834. Its totient is φ = 606572206656.

The previous prime is 1213144413337. The next prime is 1213144413347. The reversal of 1213144413344 is 4433144413121.

It can be written as a sum of positive squares in only one way, i.e., 1205296579600 + 7847833744 = 1097860^2 + 88588^2 .

It is a super-3 number, since 3×1213144413344³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213144413347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18955381427 + ... + 18955381490.

Almost surely, 2^{1213144413344} is an apocalyptic number.

It is an amenable number.

1213144413344 is a deficient number, since it is larger than the sum of its proper divisors (1175233650490).

1213144413344 is an equidigital number, since it uses as much as digits as its factorization.

1213144413344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37910762927 (or 37910762919 counting only the distinct ones).

The product of its digits is 55296, while the sum is 35.

Adding to 1213144413344 its reverse (4433144413121), we get a palindrome (5646288826465).

The spelling of 1213144413344 in words is "one trillion, two hundred thirteen billion, one hundred forty-four million, four hundred thirteen thousand, three hundred forty-four".