1100000021189 has 2 divisors, whose sum is σ = 1100000021190. Its totient is φ = 1100000021188.

The previous prime is 1100000021161. The next prime is 1100000021191. The reversal of 1100000021189 is 9811200000011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828069060289 + 271930960900 = 909983^2 + 521470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100000021189 - 2²⁰ = 1099998972613 is a prime.

Together with 1100000021191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100000021089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550000010594 + 550000010595.

It is an arithmetic number, because the mean of its divisors is an integer number (550000010595).

Almost surely, 2^{1100000021189} is an apocalyptic number.

It is an amenable number.

1100000021189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100000021189 is an equidigital number, since it uses as much as digits as its factorization.

1100000021189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1100000021189 in words is "one trillion, one hundred billion, twenty-one thousand, one hundred eighty-nine".