1213404225244 has 24 divisors (see below), whose sum is σ = 2366701742160. Its totient is φ = 540960397056.

The previous prime is 1213404225197. The next prime is 1213404225247. The reversal of 1213404225244 is 4425224043121.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213404225247) 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, 469582387 + ... + 469584970.

It is an arithmetic number, because the mean of its divisors is an integer number (98612572590).

Almost surely, 2^{1213404225244} is an apocalyptic number.

It is an amenable number.

1213404225244 is a deficient number, since it is larger than the sum of its proper divisors (1153297516916).

1213404225244 is a wasteful number, since it uses less digits than its factorization.

1213404225244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939167397 (or 939167395 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 1213404225244 its reverse (4425224043121), we get a palindrome (5638628268365).

The spelling of 1213404225244 in words is "one trillion, two hundred thirteen billion, four hundred four million, two hundred twenty-five thousand, two hundred forty-four".