12212100221111 has 8 divisors (see below), whose sum is σ = 13973047856544. Its totient is φ = 10455243058080.

The previous prime is 12212100221021. The next prime is 12212100221143. The reversal of 12212100221111 is 11112200121221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12212100221111 - 2¹⁸ = 12212099958967 is a prime.

It is a super-4 number, since 4×12212100221111⁴ (a number of 53 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12212100221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212100221011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022611700 + ... + 1022623641.

It is an arithmetic number, because the mean of its divisors is an integer number (1746630982068).

Almost surely, 2^{12212100221111} is an apocalyptic number.

12212100221111 is a deficient number, since it is larger than the sum of its proper divisors (1760947635433).

12212100221111 is an equidigital number, since it uses as much as digits as its factorization.

12212100221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045236201.

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

Adding to 12212100221111 its reverse (11112200121221), we get a palindrome (23324300342332).

The spelling of 12212100221111 in words is "twelve trillion, two hundred twelve billion, one hundred million, two hundred twenty-one thousand, one hundred eleven".