10221220331 has 16 divisors (see below), whose sum is σ = 11951047680. Its totient is φ = 8559466560.

The previous prime is 10221220307. The next prime is 10221220343. The reversal of 10221220331 is 13302212201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221220331 is a prime.

It is a super-2 number, since 2×10221220331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221228331) 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 15 ways as a sum of consecutive naturals, for example, 160655 + ... + 215063.

It is an arithmetic number, because the mean of its divisors is an integer number (746940480).

Almost surely, 2^10221220331 is an apocalyptic number.

10221220331 is a deficient number, since it is larger than the sum of its proper divisors (1729827349).

10221220331 is an equidigital number, since it uses as much as digits as its factorization.

10221220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55034.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 10221220331 its reverse (13302212201), we get a palindrome (23523432532).

The spelling of 10221220331 in words is "ten billion, two hundred twenty-one million, two hundred twenty thousand, three hundred thirty-one".