1210020321103 has 12 divisors (see below), whose sum is σ = 1330116683560. Its totient is φ = 1099940442480.

The previous prime is 1210020321091. The next prime is 1210020321109. The reversal of 1210020321103 is 3011230200121.

It is not a de Polignac number, because 1210020321103 - 2⁹ = 1210020320591 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 (1210020321109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393576 + ... + 2088562.

Almost surely, 2^{1210020321103} is an apocalyptic number.

1210020321103 is a deficient number, since it is larger than the sum of its proper divisors (120096362457).

1210020321103 is a wasteful number, since it uses less digits than its factorization.

1210020321103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709398 (or 709387 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1210020321103 its reverse (3011230200121), we get a palindrome (4221250521224).

The spelling of 1210020321103 in words is "one trillion, two hundred ten billion, twenty million, three hundred twenty-one thousand, one hundred three".