2001122111012 has 12 divisors (see below), whose sum is σ = 3506676974976. Its totient is φ = 999214403880.

The previous prime is 2001122110957. The next prime is 2001122111033. The reversal of 2001122111012 is 2101112211002.

It is a super-2 number, since 2×2001122111012² (a number of 25 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 336659564 + ... + 336665507.

It is an arithmetic number, because the mean of its divisors is an integer number (292223081248).

Almost surely, 2^{2001122111012} is an apocalyptic number.

It is an amenable number.

2001122111012 is a deficient number, since it is larger than the sum of its proper divisors (1505554863964).

2001122111012 is a wasteful number, since it uses less digits than its factorization.

2001122111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673325818 (or 673325816 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2001122111012 its reverse (2101112211002), we get a palindrome (4102234322014).

The spelling of 2001122111012 in words is "two trillion, one billion, one hundred twenty-two million, one hundred eleven thousand, twelve".