211020143 has 2 divisors, whose sum is σ = 211020144. Its totient is φ = 211020142.

The previous prime is 211020127. The next prime is 211020149. The reversal of 211020143 is 341020112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211020143 - 2⁴ = 211020127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211020149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105510071 + 105510072.

It is an arithmetic number, because the mean of its divisors is an integer number (105510072).

Almost surely, 2^211020143 is an apocalyptic number.

211020143 is a deficient number, since it is larger than the sum of its proper divisors (1).

211020143 is an equidigital number, since it uses as much as digits as its factorization.

211020143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211020143 is about 14526.5323804410. The cubic root of 211020143 is about 595.3531251288.

Adding to 211020143 its reverse (341020112), we get a palindrome (552040255).

The spelling of 211020143 in words is "two hundred eleven million, twenty thousand, one hundred forty-three".