20211101089 has 2 divisors, whose sum is σ = 20211101090. Its totient is φ = 20211101088.

The previous prime is 20211101087. The next prime is 20211101107. The reversal of 20211101089 is 98010111202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10507275025 + 9703826064 = 102505^2 + 98508^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211101089 - 2¹ = 20211101087 is a prime.

Together with 20211101087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20211101081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105550544 + 10105550545.

It is an arithmetic number, because the mean of its divisors is an integer number (10105550545).

Almost surely, 2^20211101089 is an apocalyptic number.

It is an amenable number.

20211101089 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211101089 is an equidigital number, since it uses as much as digits as its factorization.

20211101089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 20211101089 in words is "twenty billion, two hundred eleven million, one hundred one thousand, eighty-nine".