1022001109 has 2 divisors, whose sum is σ = 1022001110. Its totient is φ = 1022001108.

The previous prime is 1022001107. The next prime is 1022001119. The reversal of 1022001109 is 9011002201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 895326084 + 126675025 = 29922^2 + 11255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022001109 - 2¹ = 1022001107 is a prime.

Together with 1022001107, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1022001092 and 1022001101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022001107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511000554 + 511000555.

It is an arithmetic number, because the mean of its divisors is an integer number (511000555).

Almost surely, 2^1022001109 is an apocalyptic number.

It is an amenable number.

1022001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022001109 is an equidigital number, since it uses as much as digits as its factorization.

1022001109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1022001109 is about 31968.7520713587. The cubic root of 1022001109 is about 1007.2805676945.

The spelling of 1022001109 in words is "one billion, twenty-two million, one thousand, one hundred nine".