2001100022112 has 24 divisors (see below), whose sum is σ = 5252887558296. Its totient is φ = 667033340672.

The previous prime is 2001100022083. The next prime is 2001100022149. The reversal of 2001100022112 is 2112200011002.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 10422395853 + ... + 10422396044.

It is an arithmetic number, because the mean of its divisors is an integer number (218870314929).

Almost surely, 2^{2001100022112} is an apocalyptic number.

It is an amenable number.

2001100022112 is an abundant number, since it is smaller than the sum of its proper divisors (3251787536184).

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

2001100022112 is a wasteful number, since it uses less digits than its factorization.

2001100022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20844791910 (or 20844791902 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2001100022112 its reverse (2112200011002), we get a palindrome (4113300033114).

The spelling of 2001100022112 in words is "two trillion, one billion, one hundred million, twenty-two thousand, one hundred twelve".