2001123322 has 16 divisors (see below), whose sum is σ = 3284014752. Its totient is φ = 906976720.

The previous prime is 2001123307. The next prime is 2001123323. The reversal of 2001123322 is 2233211002.

It is a junction number, because it is equal to n+sod(n) for n = 2001123296 and 2001123305.

It is not an unprimeable number, because it can be changed into a prime (2001123323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123433 + ... + 138700.

It is an arithmetic number, because the mean of its divisors is an integer number (205250922).

Almost surely, 2^2001123322 is an apocalyptic number.

2001123322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001123322 is a deficient number, since it is larger than the sum of its proper divisors (1282891430).

2001123322 is a wasteful number, since it uses less digits than its factorization.

2001123322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262493.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2001123322 is about 44733.9169087617. The cubic root of 2001123322 is about 1260.1568885855.

Adding to 2001123322 its reverse (2233211002), we get a palindrome (4234334324).

The spelling of 2001123322 in words is "two billion, one million, one hundred twenty-three thousand, three hundred twenty-two".