2211201012221 has 8 divisors (see below), whose sum is σ = 2216153637984. Its totient is φ = 2206252164240.

The previous prime is 2211201012161. The next prime is 2211201012239. The reversal of 2211201012221 is 1222101021122.

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 2211201012221 - 2¹⁰ = 2211201011197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2211201012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211201012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229130 + ... + 2115396.

It is an arithmetic number, because the mean of its divisors is an integer number (277019204748).

Almost surely, 2^{2211201012221} is an apocalyptic number.

It is an amenable number.

2211201012221 is a deficient number, since it is larger than the sum of its proper divisors (4952625763).

2211201012221 is a wasteful number, since it uses less digits than its factorization.

2211201012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888891.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2211201012221 its reverse (1222101021122), we get a palindrome (3433302033343).

The spelling of 2211201012221 in words is "two trillion, two hundred eleven billion, two hundred one million, twelve thousand, two hundred twenty-one".