12221020111012 has 12 divisors (see below), whose sum is σ = 21627086152140. Its totient is φ = 6041852638976.

The previous prime is 12221020111009. The next prime is 12221020111021. The reversal of 12221020111012 is 21011102012221.

It can be written as a sum of positive squares in 2 ways, for example, as 8642506354596 + 3578513756416 = 2939814^2 + 1891696^2 .

It is an unprimeable number.

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, 17164353733 + ... + 17164354444.

It is an arithmetic number, because the mean of its divisors is an integer number (1802257179345).

Almost surely, 2^{12221020111012} is an apocalyptic number.

It is an amenable number.

12221020111012 is a deficient number, since it is larger than the sum of its proper divisors (9406066041128).

12221020111012 is a wasteful number, since it uses less digits than its factorization.

12221020111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34328708270 (or 34328708268 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221020111012 its reverse (21011102012221), we get a palindrome (33232122123233).

The spelling of 12221020111012 in words is "twelve trillion, two hundred twenty-one billion, twenty million, one hundred eleven thousand, twelve".