2011001222 has 4 divisors (see below), whose sum is σ = 3016501836. Its totient is φ = 1005500610.

The previous prime is 2011001197. The next prime is 2011001227. The reversal of 2011001222 is 2221001102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011001227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502750304 + ... + 502750307.

It is an arithmetic number, because the mean of its divisors is an integer number (754125459).

Almost surely, 2^2011001222 is an apocalyptic number.

2011001222 is a deficient number, since it is larger than the sum of its proper divisors (1005500614).

2011001222 is a wasteful number, since it uses less digits than its factorization.

2011001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005500613.

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

The square root of 2011001222 is about 44844.1882745133. The cubic root of 2011001222 is about 1262.2269389779.

Adding to 2011001222 its reverse (2221001102), we get a palindrome (4232002324).

The spelling of 2011001222 in words is "two billion, eleven million, one thousand, two hundred twenty-two".