211156122189011 has 2 divisors, whose sum is σ = 211156122189012. Its totient is φ = 211156122189010.

The previous prime is 211156122188939. The next prime is 211156122189029. The reversal of 211156122189011 is 110981221651112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211156122189011 - 2²² = 211156117994707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211156122189011.

It is not a weakly prime, because it can be changed into another prime (211156122189091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105578061094505 + 105578061094506.

It is an arithmetic number, because the mean of its divisors is an integer number (105578061094506).

Almost surely, 2^{211156122189011} is an apocalyptic number.

211156122189011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211156122189011 is an equidigital number, since it uses as much as digits as its factorization.

211156122189011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 41.

The spelling of 211156122189011 in words is "two hundred eleven trillion, one hundred fifty-six billion, one hundred twenty-two million, one hundred eighty-nine thousand, eleven".