1213544004002 has 16 divisors (see below), whose sum is σ = 1989747208512. Its totient is φ = 550514263920.

The previous prime is 1213544003999. The next prime is 1213544004131. The reversal of 1213544004002 is 2004004453121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54821033 + ... + 54843164.

It is an arithmetic number, because the mean of its divisors is an integer number (124359200532).

Almost surely, 2^{1213544004002} is an apocalyptic number.

1213544004002 is a deficient number, since it is larger than the sum of its proper divisors (776203204510).

1213544004002 is a wasteful number, since it uses less digits than its factorization.

1213544004002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109664713.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 1213544004002 its reverse (2004004453121), we get a palindrome (3217548457123).

The spelling of 1213544004002 in words is "one trillion, two hundred thirteen billion, five hundred forty-four million, four thousand, two".