211223023001 has 2 divisors, whose sum is σ = 211223023002. Its totient is φ = 211223023000.

The previous prime is 211223022973. The next prime is 211223023027. The reversal of 211223023001 is 100320322112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110972265625 + 100250757376 = 333125^2 + 316624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211223023001 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211223043001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611511500 + 105611511501.

It is an arithmetic number, because the mean of its divisors is an integer number (105611511501).

Almost surely, 2^211223023001 is an apocalyptic number.

It is an amenable number.

211223023001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223023001 is an equidigital number, since it uses as much as digits as its factorization.

211223023001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211223023001 its reverse (100320322112), we get a palindrome (311543345113).

The spelling of 211223023001 in words is "two hundred eleven billion, two hundred twenty-three million, twenty-three thousand, one".