1012221102221 has 8 divisors (see below), whose sum is σ = 1175788447104. Its totient is φ = 853394839920.

The previous prime is 1012221102163. The next prime is 1012221102257. The reversal of 1012221102221 is 1222011222101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012221102221 - 2¹⁸ = 1012220840077 is a prime.

It is a super-2 number, since 2×1012221102221² (a number of 25 digits) contains 22 as substring.

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 1012221102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012221152221) 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, 1185270185 + ... + 1185271038.

It is an arithmetic number, because the mean of its divisors is an integer number (146973555888).

Almost surely, 2^{1012221102221} is an apocalyptic number.

It is an amenable number.

1012221102221 is a deficient number, since it is larger than the sum of its proper divisors (163567344883).

1012221102221 is an equidigital number, since it uses as much as digits as its factorization.

1012221102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370541291.

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

Adding to 1012221102221 its reverse (1222011222101), we get a palindrome (2234232324322).

The spelling of 1012221102221 in words is "one trillion, twelve billion, two hundred twenty-one million, one hundred two thousand, two hundred twenty-one".