212221200000111 has 64 divisors (see below), whose sum is σ = 303905605570560. Its totient is φ = 131401315584000.

The previous prime is 212221200000079. The next prime is 212221200000143. The reversal of 212221200000111 is 111000002122212.

It is an interprime number because it is at equal distance from previous prime (212221200000079) and next prime (212221200000143).

It is not a de Polignac number, because 212221200000111 - 2⁵ = 212221200000079 is a prime.

It is a super-2 number, since 2×212221200000111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221200000191) 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 63 ways as a sum of consecutive naturals, for example, 721279035 + ... + 721573203.

It is an arithmetic number, because the mean of its divisors is an integer number (4748525087040).

Almost surely, 2^{212221200000111} is an apocalyptic number.

212221200000111 is a deficient number, since it is larger than the sum of its proper divisors (91684405570449).

212221200000111 is a wasteful number, since it uses less digits than its factorization.

212221200000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295448.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212221200000111 its reverse (111000002122212), we get a palindrome (323221202122323).

The spelling of 212221200000111 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred million, one hundred eleven", and thus it is an aban number.