1321213312103 has 8 divisors (see below), whose sum is σ = 1321891351872. Its totient is φ = 1320535385856.

The previous prime is 1321213312073. The next prime is 1321213312169. The reversal of 1321213312103 is 3012133121231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321213312103 - 2³⁶ = 1252493835367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321213312603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32190851 + ... + 32231867.

It is an arithmetic number, because the mean of its divisors is an integer number (165236418984).

Almost surely, 2^{1321213312103} is an apocalyptic number.

1321213312103 is a deficient number, since it is larger than the sum of its proper divisors (678039769).

1321213312103 is a wasteful number, since it uses less digits than its factorization.

1321213312103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56761.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1321213312103 its reverse (3012133121231), we get a palindrome (4333346433334).

The spelling of 1321213312103 in words is "one trillion, three hundred twenty-one billion, two hundred thirteen million, three hundred twelve thousand, one hundred three".