1001001112002 has 48 divisors (see below), whose sum is σ = 2217735219960. Its totient is φ = 326189500416.

The previous prime is 1001001111991. The next prime is 1001001112019. The reversal of 1001001112002 is 2002111001001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 499154967081 + 501846144921 = 706509^2 + 708411^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1629727 + ... + 2158242.

Almost surely, 2^{1001001112002} is an apocalyptic number.

1001001112002 is an abundant number, since it is smaller than the sum of its proper divisors (1216734107958).

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

1001001112002 is a wasteful number, since it uses less digits than its factorization.

1001001112002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788307 (or 3788304 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1001001112002 its reverse (2002111001001), we get a palindrome (3003112113003).

The spelling of 1001001112002 in words is "one trillion, one billion, one million, one hundred twelve thousand, two".