1012219999 has 12 divisors (see below), whose sum is σ = 1182185928. Its totient is φ = 864150000.

The previous prime is 1012219993. The next prime is 1012220009. The reversal of 1012219999 is 9999122101.

1012219999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1012219999 - 2⁹ = 1012219487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012219993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28852 + ... + 53449.

It is an arithmetic number, because the mean of its divisors is an integer number (98515494).

Almost surely, 2^1012219999 is an apocalyptic number.

1012219999 is a deficient number, since it is larger than the sum of its proper divisors (169965929).

1012219999 is an equidigital number, since it uses as much as digits as its factorization.

1012219999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82566 (or 82559 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 43.

The square root of 1012219999 is about 31815.4050579275. The cubic root of 1012219999 is about 1004.0568526903.

It can be divided in two parts, 101 and 2219999, that added together give a square (2220100 = 1490²).

The spelling of 1012219999 in words is "one billion, twelve million, two hundred nineteen thousand, nine hundred ninety-nine".