1001002021012 has 48 divisors (see below), whose sum is σ = 2062681976320. Its totient is φ = 416072547072.

The previous prime is 1001002020989. The next prime is 1001002021021. The reversal of 1001002021012 is 2101202001001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001002021012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219212 + ... + 1867747.

Almost surely, 2^{1001002021012} is an apocalyptic number.

It is an amenable number.

1001002021012 is an abundant number, since it is smaller than the sum of its proper divisors (1061679955308).

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

1001002021012 is a wasteful number, since it uses less digits than its factorization.

1001002021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087320 (or 3087318 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001002021012 its reverse (2101202001001), we get a palindrome (3102204022013).

The spelling of 1001002021012 in words is "one trillion, one billion, two million, twenty-one thousand, twelve".