12212101011111 has 16 divisors (see below), whose sum is σ = 16289622992640. Its totient is φ = 8137990523520.

The previous prime is 12212101011067. The next prime is 12212101011133. The reversal of 12212101011111 is 11111010121221.

It is not a de Polignac number, because 12212101011111 - 2¹³ = 12212101002919 is a prime.

It is a super-2 number, since 2×12212101011111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212101011511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77585256 + ... + 77742498.

It is an arithmetic number, because the mean of its divisors is an integer number (1018101437040).

Almost surely, 2^{12212101011111} is an apocalyptic number.

12212101011111 is a deficient number, since it is larger than the sum of its proper divisors (4077521981529).

12212101011111 is a wasteful number, since it uses less digits than its factorization.

12212101011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167926.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12212101011111 its reverse (11111010121221), we get a palindrome (23323111132332).

The spelling of 12212101011111 in words is "twelve trillion, two hundred twelve billion, one hundred one million, eleven thousand, one hundred eleven".