2000001222 has 24 divisors (see below), whose sum is σ = 4364516520. Its totient is φ = 661870080.

The previous prime is 2000001187. The next prime is 2000001229. The reversal of 2000001222 is 2221000002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 397179 + ... + 402182.

It is an arithmetic number, because the mean of its divisors is an integer number (181854855).

Almost surely, 2^2000001222 is an apocalyptic number.

2000001222 is an abundant number, since it is smaller than the sum of its proper divisors (2364515298).

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

2000001222 is a wasteful number, since it uses less digits than its factorization.

2000001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799508 (or 799505 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2000001222 is about 44721.3732123690. The cubic root of 2000001222 is about 1259.9213064987.

Adding to 2000001222 its reverse (2221000002), we get a palindrome (4221001224).

The spelling of 2000001222 in words is "two billion, one thousand, two hundred twenty-two".