11011221111889 has 2 divisors, whose sum is σ = 11011221111890. Its totient is φ = 11011221111888.

The previous prime is 11011221111887. The next prime is 11011221112013. The reversal of 11011221111889 is 98811112211011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9586349169489 + 1424871942400 = 3096183^2 + 1193680^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011221111889 - 2¹ = 11011221111887 is a prime.

Together with 11011221111887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11011221111887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505610555944 + 5505610555945.

It is an arithmetic number, because the mean of its divisors is an integer number (5505610555945).

Almost surely, 2^{11011221111889} is an apocalyptic number.

It is an amenable number.

11011221111889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011221111889 is an equidigital number, since it uses as much as digits as its factorization.

11011221111889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 37.

The spelling of 11011221111889 in words is "eleven trillion, eleven billion, two hundred twenty-one million, one hundred eleven thousand, eight hundred eighty-nine".