1020109211 has 4 divisors (see below), whose sum is σ = 1112846424. Its totient is φ = 927372000.

The previous prime is 1020109187. The next prime is 1020109213. The reversal of 1020109211 is 1129010201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020109211 - 2⁶ = 1020109147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020109211.

It is not an unprimeable number, because it can be changed into a prime (1020109213) 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 in 3 ways as a sum of consecutive naturals, for example, 46368590 + ... + 46368611.

It is an arithmetic number, because the mean of its divisors is an integer number (278211606).

Almost surely, 2^1020109211 is an apocalyptic number.

1020109211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020109211 is a deficient number, since it is larger than the sum of its proper divisors (92737213).

1020109211 is an equidigital number, since it uses as much as digits as its factorization.

1020109211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92737212.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1020109211 is about 31939.1485641055. The cubic root of 1020109211 is about 1006.6586345109.

Adding to 1020109211 its reverse (1129010201), we get a palindrome (2149119412).

The spelling of 1020109211 in words is "one billion, twenty million, one hundred nine thousand, two hundred eleven".