212221020000012 has 24 divisors (see below), whose sum is σ = 495182618002800. Its totient is φ = 70740305999616.

The previous prime is 212221019999969. The next prime is 212221020000023. The reversal of 212221020000012 is 210000020122212.

It is a super-2 number, since 2×212221020000012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212221019999946 and 212221020000000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41192064 + ... + 46056792.

It is an arithmetic number, because the mean of its divisors is an integer number (20632609083450).

Almost surely, 2^{212221020000012} is an apocalyptic number.

It is an amenable number.

212221020000012 is an abundant number, since it is smaller than the sum of its proper divisors (282961598002788).

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

212221020000012 is a wasteful number, since it uses less digits than its factorization.

212221020000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8500105 (or 8500103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212221020000012 its reverse (210000020122212), we get a palindrome (422221040122224).

The spelling of 212221020000012 in words is "two hundred twelve trillion, two hundred twenty-one billion, twenty million, twelve", and thus it is an aban number.