2001200122 has 16 divisors (see below), whose sum is σ = 3068370432. Its totient is φ = 978447600.

The previous prime is 2001200083. The next prime is 2001200141. The reversal of 2001200122 is 2210021002.

It is a junction number, because it is equal to n+sod(n) for n = 2001200099 and 2001200108.

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, 105247 + ... + 122797.

It is an arithmetic number, because the mean of its divisors is an integer number (191773152).

Almost surely, 2^2001200122 is an apocalyptic number.

2001200122 is a deficient number, since it is larger than the sum of its proper divisors (1067170310).

2001200122 is a wasteful number, since it uses less digits than its factorization.

2001200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18813.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001200122 is about 44734.7753095956. The cubic root of 2001200122 is about 1260.1730093330.

Adding to 2001200122 its reverse (2210021002), we get a palindrome (4211221124).

The spelling of 2001200122 in words is "two billion, one million, two hundred thousand, one hundred twenty-two".