1021320119 has 4 divisors (see below), whose sum is σ = 1021938144. Its totient is φ = 1020702096.

The previous prime is 1021320107. The next prime is 1021320143. The reversal of 1021320119 is 9110231201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021320119 is a prime.

It is a super-2 number, since 2×1021320119² = 2086189570948348322, which contains 22 as substring.

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 1021320119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021350119) 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, 306527 + ... + 309840.

It is an arithmetic number, because the mean of its divisors is an integer number (255484536).

Almost surely, 2^1021320119 is an apocalyptic number.

1021320119 is a deficient number, since it is larger than the sum of its proper divisors (618025).

1021320119 is an equidigital number, since it uses as much as digits as its factorization.

1021320119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618024.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1021320119 is about 31958.0994272188. The cubic root of 1021320119 is about 1007.0567908968.

The spelling of 1021320119 in words is "one billion, twenty-one million, three hundred twenty thousand, one hundred nineteen".