212311111032001 has 4 divisors (see below), whose sum is σ = 212311533298900. Its totient is φ = 212310688765104.

The previous prime is 212311111031989. The next prime is 212311111032019. The reversal of 212311111032001 is 100230111113212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127104180854401 + 85206930177600 = 11274049^2 + 9230760^2 .

It is a cyclic number.

It is not a de Polignac number, because 212311111032001 - 2³³ = 212302521097409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212311111032001.

It is not an unprimeable number, because it can be changed into a prime (212311111032071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210378366 + ... + 211385143.

It is an arithmetic number, because the mean of its divisors is an integer number (53077883324725).

Almost surely, 2^{212311111032001} is an apocalyptic number.

It is an amenable number.

212311111032001 is a deficient number, since it is larger than the sum of its proper divisors (422266899).

212311111032001 is an equidigital number, since it uses as much as digits as its factorization.

212311111032001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422266898.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 212311111032001 its reverse (100230111113212), we get a palindrome (312541222145213).

The spelling of 212311111032001 in words is "two hundred twelve trillion, three hundred eleven billion, one hundred eleven million, thirty-two thousand, one".