2012022221 has 8 divisors (see below), whose sum is σ = 2290365504. Its totient is φ = 1749584320.

The previous prime is 2012022197. The next prime is 2012022239. The reversal of 2012022221 is 1222202102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2012022221 - 2¹⁰ = 2012021197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2012022196 and 2012022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012022241) 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 in 7 ways as a sum of consecutive naturals, for example, 3976076 + ... + 3976581.

It is an arithmetic number, because the mean of its divisors is an integer number (286295688).

Almost surely, 2^2012022221 is an apocalyptic number.

It is an amenable number.

2012022221 is a deficient number, since it is larger than the sum of its proper divisors (278343283).

2012022221 is a wasteful number, since it uses less digits than its factorization.

2012022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7952691.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2012022221 is about 44855.5706796826. The cubic root of 2012022221 is about 1262.4405165714.

Adding to 2012022221 its reverse (1222202102), we get a palindrome (3234224323).

The spelling of 2012022221 in words is "two billion, twelve million, twenty-two thousand, two hundred twenty-one".