2001122112012 has 24 divisors (see below), whose sum is σ = 4725541375296. Its totient is φ = 659004068688.

The previous prime is 2001122111969. The next prime is 2001122112061. The reversal of 2001122112012 is 2102112211002.

It is a junction number, because it is equal to n+sod(n) for n = 2001122111982 and 2001122112000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004578378 + ... + 1004580369.

It is an arithmetic number, because the mean of its divisors is an integer number (196897557304).

Almost surely, 2^{2001122112012} is an apocalyptic number.

It is an amenable number.

2001122112012 is an abundant number, since it is smaller than the sum of its proper divisors (2724419263284).

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

2001122112012 is a wasteful number, since it uses less digits than its factorization.

2001122112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009158837 (or 2009158835 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001122112012 its reverse (2102112211002), we get a palindrome (4103234323014).

The spelling of 2001122112012 in words is "two trillion, one billion, one hundred twenty-two million, one hundred twelve thousand, twelve".