2212000002221 has 4 divisors (see below), whose sum is σ = 2233900992444. Its totient is φ = 2190099012000.

The previous prime is 2212000002217. The next prime is 2212000002227. The reversal of 2212000002221 is 1222000002122.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1535148258121 + 676851744100 = 1239011^2 + 822710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212000002221 - 2² = 2212000002217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212000002196 and 2212000002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212000002227) 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, 10950494960 + ... + 10950495161.

It is an arithmetic number, because the mean of its divisors is an integer number (558475248111).

Almost surely, 2^{2212000002221} is an apocalyptic number.

It is an amenable number.

2212000002221 is a deficient number, since it is larger than the sum of its proper divisors (21900990223).

2212000002221 is a wasteful number, since it uses less digits than its factorization.

2212000002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21900990222.

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

Adding to 2212000002221 its reverse (1222000002122), we get a palindrome (3434000004343).

Subtracting from 2212000002221 its reverse (1222000002122), we obtain a palindrome (990000000099).

The spelling of 2212000002221 in words is "two trillion, two hundred twelve billion, two thousand, two hundred twenty-one".