2012213221 has 8 divisors (see below), whose sum is σ = 2118531200. Its totient is φ = 1905936480.

The previous prime is 2012213219. The next prime is 2012213237. The reversal of 2012213221 is 1223122102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2012213221 - 2¹ = 2012213219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012213195 and 2012213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012213521) 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, 182185 + ... + 192913.

It is an arithmetic number, because the mean of its divisors is an integer number (264816400).

Almost surely, 2^2012213221 is an apocalyptic number.

It is an amenable number.

2012213221 is a deficient number, since it is larger than the sum of its proper divisors (106317979).

2012213221 is a wasteful number, since it uses less digits than its factorization.

2012213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20619.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2012213221 is about 44857.6996846695. The cubic root of 2012213221 is about 1262.4804628679.

Adding to 2012213221 its reverse (1223122102), we get a palindrome (3235335323).

The spelling of 2012213221 in words is "two billion, twelve million, two hundred thirteen thousand, two hundred twenty-one".