212112220220111 has 4 divisors (see below), whose sum is σ = 212646507928872. Its totient is φ = 211577932511352.

The previous prime is 212112220220093. The next prime is 212112220220191. The reversal of 212112220220111 is 111022022211212.

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 212112220220111 - 2¹⁴ = 212112220203727 is a prime.

It is a super-2 number, since 2×212112220220111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112220220191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267143853785 + ... + 267143854578.

It is an arithmetic number, because the mean of its divisors is an integer number (53161626982218).

Almost surely, 2^{212112220220111} is an apocalyptic number.

212112220220111 is a deficient number, since it is larger than the sum of its proper divisors (534287708761).

212112220220111 is an equidigital number, since it uses as much as digits as its factorization.

212112220220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534287708760.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212112220220111 its reverse (111022022211212), we get a palindrome (323134242431323).

The spelling of 212112220220111 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty thousand, one hundred eleven".