2001122012 has 12 divisors (see below), whose sum is σ = 3502287096. Its totient is φ = 1000468560.

The previous prime is 2001121999. The next prime is 2001122069. The reversal of 2001122012 is 2102211002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2001121984 and 2001122002.

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, 54698 + ... + 83630.

It is an arithmetic number, because the mean of its divisors is an integer number (291857258).

Almost surely, 2^2001122012 is an apocalyptic number.

It is an amenable number.

2001122012 is a deficient number, since it is larger than the sum of its proper divisors (1501165084).

2001122012 is a wasteful number, since it uses less digits than its factorization.

2001122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46228 (or 46226 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2001122012 is about 44733.9022666255. The cubic root of 2001122012 is about 1260.1566136057.

Adding to 2001122012 its reverse (2102211002), we get a palindrome (4103333014).

The spelling of 2001122012 in words is "two billion, one million, one hundred twenty-two thousand, twelve".