10221100222212 has 72 divisors (see below), whose sum is σ = 28257914805120. Its totient is φ = 3089340832320.

The previous prime is 10221100222199. The next prime is 10221100222213. The reversal of 10221100222212 is 21222200112201.

It is a happy number.

10221100222212 is a `hidden beast` number, since 1 + 0 + 221 + 10 + 0 + 222 + 212 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (10221100222213) 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 23 ways as a sum of consecutive naturals, for example, 33021868 + ... + 33329955.

It is an arithmetic number, because the mean of its divisors is an integer number (392471038960).

Almost surely, 2^{10221100222212} is an apocalyptic number.

10221100222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221100222212 is an abundant number, since it is smaller than the sum of its proper divisors (18036814582908).

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

10221100222212 is a wasteful number, since it uses less digits than its factorization.

10221100222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66352233 (or 66352228 counting only the distinct ones).

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

Adding to 10221100222212 its reverse (21222200112201), we get a palindrome (31443300334413).

The spelling of 10221100222212 in words is "ten trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, two hundred twelve".