212404434311211 has 4 divisors (see below), whose sum is σ = 283205912414952. Its totient is φ = 141602956207472.

The previous prime is 212404434311177. The next prime is 212404434311221. The reversal of 212404434311211 is 112113434404212.

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 212404434311211 - 2⁴¹ = 210205411055659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212404434311221) 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, 35400739051866 + ... + 35400739051871.

It is an arithmetic number, because the mean of its divisors is an integer number (70801478103738).

Almost surely, 2^{212404434311211} is an apocalyptic number.

212404434311211 is a deficient number, since it is larger than the sum of its proper divisors (70801478103741).

212404434311211 is an equidigital number, since it uses as much as digits as its factorization.

212404434311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70801478103740.

The product of its (nonzero) digits is 18432, while the sum is 33.

Adding to 212404434311211 its reverse (112113434404212), we get a palindrome (324517868715423).

The spelling of 212404434311211 in words is "two hundred twelve trillion, four hundred four billion, four hundred thirty-four million, three hundred eleven thousand, two hundred eleven".