12021210201111 has 16 divisors (see below), whose sum is σ = 16461718195200. Its totient is φ = 7797427517088.

The previous prime is 12021210201109. The next prime is 12021210201163. The reversal of 12021210201111 is 11110201212021.

It is a happy number.

It is not a de Polignac number, because 12021210201111 - 2¹ = 12021210201109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021210206111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7176610 + ... + 8691728.

It is an arithmetic number, because the mean of its divisors is an integer number (1028857387200).

Almost surely, 2^{12021210201111} is an apocalyptic number.

12021210201111 is a deficient number, since it is larger than the sum of its proper divisors (4440507994089).

12021210201111 is a wasteful number, since it uses less digits than its factorization.

12021210201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586638.

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

Adding to 12021210201111 its reverse (11110201212021), we get a palindrome (23131411413132).

The spelling of 12021210201111 in words is "twelve trillion, twenty-one billion, two hundred ten million, two hundred one thousand, one hundred eleven".