10021222021212 has 96 divisors (see below), whose sum is σ = 26241115924800. Its totient is φ = 3306964320000.

The previous prime is 10021222021201. The next prime is 10021222021229. The reversal of 10021222021212 is 21212022212001.

It is a happy number.

10021222021212 is a `hidden beast` number, since 1 + 0 + 0 + 212 + 220 + 21 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 107953714 + ... + 108046502.

It is an arithmetic number, because the mean of its divisors is an integer number (273344957550).

Almost surely, 2^{10021222021212} is an apocalyptic number.

10021222021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021222021212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13120557962400).

10021222021212 is an abundant number, since it is smaller than the sum of its proper divisors (16219893903588).

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

10021222021212 is a wasteful number, since it uses less digits than its factorization.

10021222021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102804 (or 102796 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10021222021212 its reverse (21212022212001), we get a palindrome (31233244233213).

The spelling of 10021222021212 in words is "ten trillion, twenty-one billion, two hundred twenty-two million, twenty-one thousand, two hundred twelve".