10011223221 has 16 divisors (see below), whose sum is σ = 13439545728. Its totient is φ = 6628564800.

The previous prime is 10011223219. The next prime is 10011223241. The reversal of 10011223221 is 12232211001.

10011223221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10011223221 - 2¹ = 10011223219 is a prime.

It is a super-2 number, since 2×10011223221² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10011223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011223241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499631 + ... + 1506291.

It is an arithmetic number, because the mean of its divisors is an integer number (839971608).

Almost surely, 2^10011223221 is an apocalyptic number.

It is an amenable number.

10011223221 is a deficient number, since it is larger than the sum of its proper divisors (3428322507).

10011223221 is a wasteful number, since it uses less digits than its factorization.

10011223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10011223221 its reverse (12232211001), we get a palindrome (22243434222).

It can be divided in two parts, 1001 and 1223221, that multiplied together give a palindrome (1224444221).

The spelling of 10011223221 in words is "ten billion, eleven million, two hundred twenty-three thousand, two hundred twenty-one".