2001111122002 has 16 divisors (see below), whose sum is σ = 3010385849112. Its totient is φ = 997649579520.

The previous prime is 2001111121967. The next prime is 2001111122029. The reversal of 2001111122002 is 2002211111002.

It can be written as a sum of positive squares in 4 ways, for example, as 1275835761841 + 725275360161 = 1129529^2 + 851631^2 .

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 7 ways as a sum of consecutive naturals, for example, 10538968 + ... + 10727164.

Almost surely, 2^{2001111122002} is an apocalyptic number.

2001111122002 is a deficient number, since it is larger than the sum of its proper divisors (1009274727110).

2001111122002 is a wasteful number, since it uses less digits than its factorization.

2001111122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203613.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001111122002 its reverse (2002211111002), we get a palindrome (4003322233004).

The spelling of 2001111122002 in words is "two trillion, one billion, one hundred eleven million, one hundred twenty-two thousand, two".