21111110021189 has 2 divisors, whose sum is σ = 21111110021190. Its totient is φ = 21111110021188.

The previous prime is 21111110021119. The next prime is 21111110021237. The reversal of 21111110021189 is 98112001111112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20059783804225 + 1051326216964 = 4478815^2 + 1025342^2 .

It is a cyclic number.

It is not a de Polignac number, because 21111110021189 - 2¹² = 21111110017093 is a prime.

It is a super-3 number, since 3×21111110021189³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21111110021119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555555010594 + 10555555010595.

It is an arithmetic number, because the mean of its divisors is an integer number (10555555010595).

Almost surely, 2^{21111110021189} is an apocalyptic number.

It is an amenable number.

21111110021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111110021189 is an equidigital number, since it uses as much as digits as its factorization.

21111110021189 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 29.

The spelling of 21111110021189 in words is "twenty-one trillion, one hundred eleven billion, one hundred ten million, twenty-one thousand, one hundred eighty-nine".