1001201002002 has 12 divisors (see below), whose sum is σ = 2169268837710. Its totient is φ = 333733667328.

The previous prime is 1001201001989. The next prime is 1001201002049. The reversal of 1001201002002 is 2002001021001.

It can be written as a sum of positive squares in only one way, i.e., 630199410201 + 371001591801 = 793851^2 + 609099^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 27811138927 + ... + 27811138962.

Almost surely, 2^{1001201002002} is an apocalyptic number.

1001201002002 is an abundant number, since it is smaller than the sum of its proper divisors (1168067835708).

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

1001201002002 is a wasteful number, since it uses less digits than its factorization.

1001201002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55622277897 (or 55622277894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001201002002 its reverse (2002001021001), we get a palindrome (3003202023003).

The spelling of 1001201002002 in words is "one trillion, one billion, two hundred one million, two thousand, two".