2221211000221 has 8 divisors (see below), whose sum is σ = 2243600581464. Its totient is φ = 2198829211200.

The previous prime is 2221211000207. The next prime is 2221211000287. The reversal of 2221211000221 is 1220001121222.

It is a happy number.

2221211000221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 598163028100 + 1623047972121 = 773410^2 + 1273989^2 .

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 2221211000221 - 2¹⁹ = 2221210475933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221211000195 and 2221211000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221211000621) 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, 1374226 + ... + 2516131.

It is an arithmetic number, because the mean of its divisors is an integer number (280450072683).

Almost surely, 2^{2221211000221} is an apocalyptic number.

It is an amenable number.

2221211000221 is a deficient number, since it is larger than the sum of its proper divisors (22389581243).

2221211000221 is a wasteful number, since it uses less digits than its factorization.

2221211000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3896111.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221211000221 its reverse (1220001121222), we get a palindrome (3441212121443).

The spelling of 2221211000221 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-one", and thus it is an aban number.