12212020111 has 4 divisors (see below), whose sum is σ = 12412217224. Its totient is φ = 12011823000.

The previous prime is 12212020097. The next prime is 12212020181. The reversal of 12212020111 is 11102021221.

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 12212020111 - 2¹⁵ = 12211987343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212020091 and 12212020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212020181) 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, 100098465 + ... + 100098586.

It is an arithmetic number, because the mean of its divisors is an integer number (3103054306).

Almost surely, 2^12212020111 is an apocalyptic number.

12212020111 is a deficient number, since it is larger than the sum of its proper divisors (200197113).

12212020111 is an equidigital number, since it uses as much as digits as its factorization.

12212020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200197112.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12212020111 its reverse (11102021221), we get a palindrome (23314041332).

The spelling of 12212020111 in words is "twelve billion, two hundred twelve million, twenty thousand, one hundred eleven".