1321203103010 has 128 divisors (see below), whose sum is σ = 2821402160640. Its totient is φ = 436365162240.

The previous prime is 1321203102991. The next prime is 1321203103019. The reversal of 1321203103010 is 103013021231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321203103010.

It is not an unprimeable number, because it can be changed into a prime (1321203103019) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1360661825 + ... + 1360662795.

It is an arithmetic number, because the mean of its divisors is an integer number (22042204380).

Almost surely, 2^{1321203103010} is an apocalyptic number.

1321203103010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321203103010 is an abundant number, since it is smaller than the sum of its proper divisors (1500199057630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321203103010 is an frugal number, since it uses more digits than its factorization.

1321203103010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1321203103010 its reverse (103013021231), we get a palindrome (1424216124241).

The spelling of 1321203103010 in words is "one trillion, three hundred twenty-one billion, two hundred three million, one hundred three thousand, ten".