2001112111122 has 8 divisors (see below), whose sum is σ = 4002224222256. Its totient is φ = 667037370372.

The previous prime is 2001112111081. The next prime is 2001112111133. The reversal of 2001112111122 is 2211112111002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2001112111122 is an admirable 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, 166759342588 + ... + 166759342599.

It is an arithmetic number, because the mean of its divisors is an integer number (500278027782).

Almost surely, 2^{2001112111122} is an apocalyptic number.

2001112111122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2001112111122 is a wasteful number, since it uses less digits than its factorization.

2001112111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333518685192.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2001112111122 its reverse (2211112111002), we get a palindrome (4212224222124).

The spelling of 2001112111122 in words is "two trillion, one billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-two".