212011331243 has 8 divisors (see below), whose sum is σ = 224535444768. Its totient is φ = 199493090944.

The previous prime is 212011331197. The next prime is 212011331263. The reversal of 212011331243 is 342133110212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212011331243 - 2⁶ = 212011331179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212011331263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393871 + ... + 1538472.

It is an arithmetic number, because the mean of its divisors is an integer number (28066930596).

Almost surely, 2^212011331243 is an apocalyptic number.

212011331243 is a deficient number, since it is larger than the sum of its proper divisors (12524113525).

212011331243 is a wasteful number, since it uses less digits than its factorization.

212011331243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936613.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 212011331243 its reverse (342133110212), we get a palindrome (554144441455).

The spelling of 212011331243 in words is "two hundred twelve billion, eleven million, three hundred thirty-one thousand, two hundred forty-three".