1213412542503 has 16 divisors (see below), whose sum is σ = 1849107254016. Its totient is φ = 693341971200.

The previous prime is 1213412542481. The next prime is 1213412542567. The reversal of 1213412542503 is 3052452143121.

It is not a de Polignac number, because 1213412542503 - 2⁴⁰ = 113900914727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213412541503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116426 + ... + 1916567.

It is an arithmetic number, because the mean of its divisors is an integer number (115569203376).

Almost surely, 2^{1213412542503} is an apocalyptic number.

1213412542503 is a deficient number, since it is larger than the sum of its proper divisors (635694711513).

1213412542503 is a wasteful number, since it uses less digits than its factorization.

1213412542503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052054.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 1213412542503 its reverse (3052452143121), we get a palindrome (4265864685624).

The spelling of 1213412542503 in words is "one trillion, two hundred thirteen billion, four hundred twelve million, five hundred forty-two thousand, five hundred three".