212311231102001 has 4 divisors (see below), whose sum is σ = 212311354308900. Its totient is φ = 212311107895104.

The previous prime is 212311231101971. The next prime is 212311231102027. The reversal of 212311231102001 is 100201132113212.

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 169489127402401 + 42822103699600 = 13018799^2 + 6543860^2 .

It is a cyclic number.

It is not a de Polignac number, because 212311231102001 - 2¹⁸ = 212311230839857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212311231102081) 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, 58981436 + ... + 62477453.

It is an arithmetic number, because the mean of its divisors is an integer number (53077838577225).

Almost surely, 2^{212311231102001} is an apocalyptic number.

It is an amenable number.

212311231102001 is a deficient number, since it is larger than the sum of its proper divisors (123206899).

212311231102001 is a wasteful number, since it uses less digits than its factorization.

212311231102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123206898.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 212311231102001 its reverse (100201132113212), we get a palindrome (312512363215213).

The spelling of 212311231102001 in words is "two hundred twelve trillion, three hundred eleven billion, two hundred thirty-one million, one hundred two thousand, one".