2212100221 has 8 divisors (see below), whose sum is σ = 2228264064. Its totient is φ = 2195968320.

The previous prime is 2212100179. The next prime is 2212100243. The reversal of 2212100221 is 1220012122.

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 2212100221 - 2⁹ = 2212099709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212100281) 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, 141045 + ... + 155941.

It is an arithmetic number, because the mean of its divisors is an integer number (278533008).

Almost surely, 2^2212100221 is an apocalyptic number.

It is an amenable number.

2212100221 is a deficient number, since it is larger than the sum of its proper divisors (16163843).

2212100221 is a wasteful number, since it uses less digits than its factorization.

2212100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15971.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2212100221 is about 47032.9695107592. The cubic root of 2212100221 is about 1302.9715497711.

Adding to 2212100221 its reverse (1220012122), we get a palindrome (3432112343).

The spelling of 2212100221 in words is "two billion, two hundred twelve million, one hundred thousand, two hundred twenty-one".