1021109027 has 2 divisors, whose sum is σ = 1021109028. Its totient is φ = 1021109026.

The previous prime is 1021109021. The next prime is 1021109071. The reversal of 1021109027 is 7209011201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021109027 - 2¹⁰ = 1021108003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021108993 and 1021109011.

It is not a weakly prime, because it can be changed into another prime (1021109021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510554513 + 510554514.

It is an arithmetic number, because the mean of its divisors is an integer number (510554514).

Almost surely, 2^1021109027 is an apocalyptic number.

1021109027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021109027 is an equidigital number, since it uses as much as digits as its factorization.

1021109027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1021109027 is about 31954.7966196000. The cubic root of 1021109027 is about 1006.9874047904.

The spelling of 1021109027 in words is "one billion, twenty-one million, one hundred nine thousand, twenty-seven".