21141089 has 2 divisors, whose sum is σ = 21141090. Its totient is φ = 21141088.

The previous prime is 21141083. The next prime is 21141103. The reversal of 21141089 is 98014112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20322064 + 819025 = 4508^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 21141089 - 2⁴ = 21141073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21141083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570544 + 10570545.

It is an arithmetic number, because the mean of its divisors is an integer number (10570545).

Almost surely, 2^21141089 is an apocalyptic number.

It is an amenable number.

21141089 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141089 is an equidigital number, since it uses as much as digits as its factorization.

21141089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 21141089 is about 4597.9439970491. The cubic root of 21141089 is about 276.5089023291.

The spelling of 21141089 in words is "twenty-one million, one hundred forty-one thousand, eighty-nine".