1013205012 has 12 divisors (see below), whose sum is σ = 2364145056. Its totient is φ = 337735000.

The previous prime is 1013204971. The next prime is 1013205047. The reversal of 1013205012 is 2105023101.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1013204982 and 1013205000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42216864 + ... + 42216887.

It is an arithmetic number, because the mean of its divisors is an integer number (197012088).

Almost surely, 2^1013205012 is an apocalyptic number.

1013205012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1013205012 is an abundant number, since it is smaller than the sum of its proper divisors (1350940044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1013205012 is a wasteful number, since it uses less digits than its factorization.

1013205012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84433758 (or 84433756 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1013205012 is about 31830.8814204068. The cubic root of 1013205012 is about 1004.3824368579.

Adding to 1013205012 its reverse (2105023101), we get a palindrome (3118228113).

The spelling of 1013205012 in words is "one billion, thirteen million, two hundred five thousand, twelve".