211111000021189 has 2 divisors, whose sum is σ = 211111000021190. Its totient is φ = 211111000021188.

The previous prime is 211111000021183. The next prime is 211111000021231. The reversal of 211111000021189 is 981120000111112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141816063909025 + 69294936112164 = 11908655^2 + 8324358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211111000021189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111000021183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555500010594 + 105555500010595.

It is an arithmetic number, because the mean of its divisors is an integer number (105555500010595).

Almost surely, 2^{211111000021189} is an apocalyptic number.

It is an amenable number.

211111000021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111000021189 is an equidigital number, since it uses as much as digits as its factorization.

211111000021189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 28.

The spelling of 211111000021189 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-one thousand, one hundred eighty-nine".