212212220222011 has 4 divisors (see below), whose sum is σ = 212212287631224. Its totient is φ = 212212152812800.

The previous prime is 212212220221993. The next prime is 212212220222021. The reversal of 212212220222011 is 110222022212212.

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 212212220222011 - 2⁵ = 212212220221979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212212220222021) 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, 28738525 + ... + 35359966.

It is an arithmetic number, because the mean of its divisors is an integer number (53053071907806).

Almost surely, 2^{212212220222011} is an apocalyptic number.

212212220222011 is a deficient number, since it is larger than the sum of its proper divisors (67409213).

212212220222011 is an equidigital number, since it uses as much as digits as its factorization.

212212220222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67409212.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212212220222011 its reverse (110222022212212), we get a palindrome (322434242434223).

The spelling of 212212220222011 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, eleven".