12201121020111 has 64 divisors (see below), whose sum is σ = 17408879603712. Its totient is φ = 7574400000000.

The previous prime is 12201121020091. The next prime is 12201121020163. The reversal of 12201121020111 is 11102012110221.

It is a happy number.

It is not a de Polignac number, because 12201121020111 - 2¹¹ = 12201121018063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201121020311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2319161221 + ... + 2319166481.

It is an arithmetic number, because the mean of its divisors is an integer number (272013743808).

Almost surely, 2^{12201121020111} is an apocalyptic number.

12201121020111 is a deficient number, since it is larger than the sum of its proper divisors (5207758583601).

12201121020111 is a wasteful number, since it uses less digits than its factorization.

12201121020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6584.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12201121020111 its reverse (11102012110221), we get a palindrome (23303133130332).

The spelling of 12201121020111 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, twenty thousand, one hundred eleven".