2001112122004 has 48 divisors (see below), whose sum is σ = 3630901982400. Its totient is φ = 963869984000.

The previous prime is 2001112121993. The next prime is 2001112122011. The reversal of 2001112122004 is 4002212111002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110911224 + ... + 110929264.

It is an arithmetic number, because the mean of its divisors is an integer number (75643791300).

Almost surely, 2^{2001112122004} is an apocalyptic number.

It is an amenable number.

2001112122004 is a deficient number, since it is larger than the sum of its proper divisors (1629789860396).

2001112122004 is a wasteful number, since it uses less digits than its factorization.

2001112122004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20184 (or 20182 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2001112122004 its reverse (4002212111002), we get a palindrome (6003324233006).

The spelling of 2001112122004 in words is "two trillion, one billion, one hundred twelve million, one hundred twenty-two thousand, four".