12221021210111 has 16 divisors (see below), whose sum is σ = 14053805740800. Its totient is φ = 10410041913408.

The previous prime is 12221021210063. The next prime is 12221021210113. The reversal of 12221021210111 is 11101212012221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221021210111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12221021210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221021210113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109990 + ... + 5066963.

It is an arithmetic number, because the mean of its divisors is an integer number (878362858800).

Almost surely, 2^{12221021210111} is an apocalyptic number.

12221021210111 is a deficient number, since it is larger than the sum of its proper divisors (1832784530689).

12221021210111 is a wasteful number, since it uses less digits than its factorization.

12221021210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6178718.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12221021210111 its reverse (11101212012221), we get a palindrome (23322233222332).

The spelling of 12221021210111 in words is "twelve trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, one hundred eleven".