1209021802002 has 48 divisors (see below), whose sum is σ = 2998297628352. Its totient is φ = 344912182560.

The previous prime is 1209021801979. The next prime is 1209021802007. The reversal of 1209021802002 is 2002081209021.

It is not an unprimeable number, because it can be changed into a prime (1209021802007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7174968 + ... + 7341539.

It is an arithmetic number, because the mean of its divisors is an integer number (62464533924).

Almost surely, 2^{1209021802002} is an apocalyptic number.

1209021802002 is an abundant number, since it is smaller than the sum of its proper divisors (1789275826350).

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

1209021802002 is a wasteful number, since it uses less digits than its factorization.

1209021802002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14517183 (or 14517180 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 1209021802002 in words is "one trillion, two hundred nine billion, twenty-one million, eight hundred two thousand, two".