211143400001 has 2 divisors, whose sum is σ = 211143400002. Its totient is φ = 211143400000.

The previous prime is 211143399991. The next prime is 211143400043. The reversal of 211143400001 is 100004341112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135560194225 + 75583205776 = 368185^2 + 274924^2 .

It is a cyclic number.

It is not a de Polignac number, because 211143400001 - 2¹⁸ = 211143137857 is a prime.

It is not a weakly prime, because it can be changed into another prime (211143400201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571700000 + 105571700001.

It is an arithmetic number, because the mean of its divisors is an integer number (105571700001).

Almost surely, 2^211143400001 is an apocalyptic number.

It is an amenable number.

211143400001 is a deficient number, since it is larger than the sum of its proper divisors (1).

211143400001 is an equidigital number, since it uses as much as digits as its factorization.

211143400001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 211143400001 its reverse (100004341112), we get a palindrome (311147741113).

The spelling of 211143400001 in words is "two hundred eleven billion, one hundred forty-three million, four hundred thousand, one".