1001020001012 has 12 divisors (see below), whose sum is σ = 1755147356676. Its totient is φ = 499549327680.

The previous prime is 1001020000993. The next prime is 1001020001021. The reversal of 1001020001012 is 2101000201001.

It can be written as a sum of positive squares in 2 ways, for example, as 119291488996 + 881728512016 = 345386^2 + 939004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240165863 + ... + 240170030.

It is an arithmetic number, because the mean of its divisors is an integer number (146262279723).

Almost surely, 2^{1001020001012} is an apocalyptic number.

It is an amenable number.

1001020001012 is a deficient number, since it is larger than the sum of its proper divisors (754127355664).

1001020001012 is a wasteful number, since it uses less digits than its factorization.

1001020001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480336418 (or 480336416 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1001020001012 its reverse (2101000201001), we get a palindrome (3102020202013).

The spelling of 1001020001012 in words is "one trillion, one billion, twenty million, one thousand, twelve".