1321010203002 has 24 divisors (see below), whose sum is σ = 3073370677056. Its totient is φ = 377431486488.

The previous prime is 1321010202979. The next prime is 1321010203013. The reversal of 1321010203002 is 2003020101231.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2246615698 + ... + 2246616285.

It is an arithmetic number, because the mean of its divisors is an integer number (128057111544).

Almost surely, 2^{1321010203002} is an apocalyptic number.

1321010203002 is an abundant number, since it is smaller than the sum of its proper divisors (1752360474054).

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

1321010203002 is a wasteful number, since it uses less digits than its factorization.

1321010203002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493232002 (or 4493231995 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1321010203002 its reverse (2003020101231), we get a palindrome (3324030304233).

The spelling of 1321010203002 in words is "one trillion, three hundred twenty-one billion, ten million, two hundred three thousand, two".