12021112212101 has 4 divisors (see below), whose sum is σ = 12074068653792. Its totient is φ = 11968155770412.

The previous prime is 12021112212023. The next prime is 12021112212157. The reversal of 12021112212101 is 10121221112021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021112212101 is a prime.

It is a super-2 number, since 2×12021112212101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021112212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021112712101) 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, 26478220505 + ... + 26478220958.

It is an arithmetic number, because the mean of its divisors is an integer number (3018517163448).

Almost surely, 2^{12021112212101} is an apocalyptic number.

It is an amenable number.

12021112212101 is a deficient number, since it is larger than the sum of its proper divisors (52956441691).

12021112212101 is an equidigital number, since it uses as much as digits as its factorization.

12021112212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52956441690.

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

Adding to 12021112212101 its reverse (10121221112021), we get a palindrome (22142333324122).

The spelling of 12021112212101 in words is "twelve trillion, twenty-one billion, one hundred twelve million, two hundred twelve thousand, one hundred one".