12222211000021 has 16 divisors (see below), whose sum is σ = 14036285770560. Its totient is φ = 10525397921280.

The previous prime is 12222211000019. The next prime is 12222211000067. The reversal of 12222211000021 is 12000011222221.

It is a happy number.

It is not a de Polignac number, because 12222211000021 - 2¹ = 12222211000019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222210999959 and 12222211000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222211000091) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 89026 + ... + 4944931.

It is an arithmetic number, because the mean of its divisors is an integer number (877267860660).

Almost surely, 2^{12222211000021} is an apocalyptic number.

12222211000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222211000021 is a deficient number, since it is larger than the sum of its proper divisors (1814074770539).

12222211000021 is a wasteful number, since it uses less digits than its factorization.

12222211000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045604.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222211000021 its reverse (12000011222221), we get a palindrome (24222222222242).

The spelling of 12222211000021 in words is "twelve trillion, two hundred twenty-two billion, two hundred eleven million, twenty-one", and thus it is an aban number.