211142321011 has 2 divisors, whose sum is σ = 211142321012. Its totient is φ = 211142321010.

The previous prime is 211142321009. The next prime is 211142321051. The reversal of 211142321011 is 110123241112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211142321011 - 2¹ = 211142321009 is a prime.

Together with 211142321009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 211142321011.

It is not a weakly prime, because it can be changed into another prime (211142321051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571160505 + 105571160506.

It is an arithmetic number, because the mean of its divisors is an integer number (105571160506).

Almost surely, 2^211142321011 is an apocalyptic number.

211142321011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211142321011 is an equidigital number, since it uses as much as digits as its factorization.

211142321011 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 19.

Adding to 211142321011 its reverse (110123241112), we get a palindrome (321265562123).

The spelling of 211142321011 in words is "two hundred eleven billion, one hundred forty-two million, three hundred twenty-one thousand, eleven".