10012220221212 has 120 divisors (see below), whose sum is σ = 28558558060032. Its totient is φ = 3033454730400.

The previous prime is 10012220221207. The next prime is 10012220221229. The reversal of 10012220221212 is 21212202221001.

It is a happy number.

10012220221212 is a `hidden beast` number, since 1 + 0 + 0 + 12 + 220 + 221 + 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 polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19574037 + ... + 20079027.

Almost surely, 2^{10012220221212} is an apocalyptic number.

10012220221212 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 10012220221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14279279030016).

10012220221212 is an abundant number, since it is smaller than the sum of its proper divisors (18546337838820).

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

10012220221212 is a wasteful number, since it uses less digits than its factorization.

10012220221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510581 (or 510570 counting only the distinct ones).

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

Adding to 10012220221212 its reverse (21212202221001), we get a palindrome (31224422442213).

The spelling of 10012220221212 in words is "ten trillion, twelve billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".