10021221222 has 32 divisors (see below), whose sum is σ = 20358214272. Its totient is φ = 3287860224.

The previous prime is 10021221191. The next prime is 10021221239. The reversal of 10021221222 is 22212212001.

It is a congruent number.

It is an unprimeable number.

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, 515878 + ... + 534950.

It is an arithmetic number, because the mean of its divisors is an integer number (636194196).

Almost surely, 2^10021221222 is an apocalyptic number.

10021221222 is an abundant number, since it is smaller than the sum of its proper divisors (10336993050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021221222 is a wasteful number, since it uses less digits than its factorization.

10021221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20452.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10021221222 its reverse (22212212001), we get a palindrome (32233433223).

The spelling of 10021221222 in words is "ten billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".