12021102201111 has 4 divisors (see below), whose sum is σ = 16028136268152. Its totient is φ = 8014068134072.

The previous prime is 12021102201109. The next prime is 12021102201131. The reversal of 12021102201111 is 11110220112021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12021102201111 - 2¹ = 12021102201109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021102201131) 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 3 ways as a sum of consecutive naturals, for example, 2003517033516 + ... + 2003517033521.

It is an arithmetic number, because the mean of its divisors is an integer number (4007034067038).

Almost surely, 2^{12021102201111} is an apocalyptic number.

12021102201111 is a deficient number, since it is larger than the sum of its proper divisors (4007034067041).

12021102201111 is an equidigital number, since it uses as much as digits as its factorization.

12021102201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007034067040.

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

Adding to 12021102201111 its reverse (11110220112021), we get a palindrome (23131322313132).

The spelling of 12021102201111 in words is "twelve trillion, twenty-one billion, one hundred two million, two hundred one thousand, one hundred eleven".