1213024003444 has 36 divisors (see below), whose sum is σ = 2377341729252. Its totient is φ = 540971242240.

The previous prime is 1213024003379. The next prime is 1213024003469. The reversal of 1213024003444 is 4443004203121.

It can be written as a sum of positive squares in 2 ways, for example, as 696911075344 + 516112928100 = 834812^2 + 718410^2 .

It is a super-2 number, since 2×1213024003444² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23618197 + ... + 23669500.

It is an arithmetic number, because the mean of its divisors is an integer number (66037270257).

Almost surely, 2^{1213024003444} is an apocalyptic number.

It is an amenable number.

1213024003444 is a deficient number, since it is larger than the sum of its proper divisors (1164317725808).

1213024003444 is a wasteful number, since it uses less digits than its factorization.

1213024003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47287776 (or 47287763 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1213024003444 its reverse (4443004203121), we get a palindrome (5656028206565).

The spelling of 1213024003444 in words is "one trillion, two hundred thirteen billion, twenty-four million, three thousand, four hundred forty-four".