2212002100221 has 4 divisors (see below), whose sum is σ = 2949336133632. Its totient is φ = 1474668066812.

The previous prime is 2212002100163. The next prime is 2212002100237. The reversal of 2212002100221 is 1220012002122.

2212002100221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2212002100221 - 2³⁷ = 2074563146749 is a prime.

It is a super-2 number, since 2×2212002100221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2212002100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212002100621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368667016701 + ... + 368667016706.

It is an arithmetic number, because the mean of its divisors is an integer number (737334033408).

Almost surely, 2^{2212002100221} is an apocalyptic number.

It is an amenable number.

2212002100221 is a deficient number, since it is larger than the sum of its proper divisors (737334033411).

2212002100221 is an equidigital number, since it uses as much as digits as its factorization.

2212002100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737334033410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2212002100221 its reverse (1220012002122), we get a palindrome (3432014102343).

The spelling of 2212002100221 in words is "two trillion, two hundred twelve billion, two million, one hundred thousand, two hundred twenty-one".