20212202221012 has 12 divisors (see below), whose sum is σ = 35371499537556. Its totient is φ = 10106059496000.

The previous prime is 20212202221009. The next prime is 20212202221019. The reversal of 20212202221012 is 21012220221202.

It can be written as a sum of positive squares in 2 ways, for example, as 19191285977796 + 1020916243216 = 4380786^2 + 1010404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212202221019) 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 3 ways as a sum of consecutive naturals, for example, 9297739 + ... + 11263762.

It is an arithmetic number, because the mean of its divisors is an integer number (2947624961463).

Almost surely, 2^{20212202221012} is an apocalyptic number.

It is an amenable number.

20212202221012 is a deficient number, since it is larger than the sum of its proper divisors (15159297316544).

20212202221012 is a wasteful number, since it uses less digits than its factorization.

20212202221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807258 (or 20807256 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20212202221012 its reverse (21012220221202), we get a palindrome (41224422442214).

The spelling of 20212202221012 in words is "twenty trillion, two hundred twelve billion, two hundred two million, two hundred twenty-one thousand, twelve".