1012002012 has 120 divisors (see below), whose sum is σ = 3046516704. Its totient is φ = 286944768.

The previous prime is 1012002011. The next prime is 1012002023. The reversal of 1012002012 is 2102002101.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1012001985 and 1012002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012002011) 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 39 ways as a sum of consecutive naturals, for example, 309088 + ... + 312344.

Almost surely, 2^1012002012 is an apocalyptic number.

1012002012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012002012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523258352).

1012002012 is an abundant number, since it is smaller than the sum of its proper divisors (2034514692).

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

1012002012 is a wasteful number, since it uses less digits than its factorization.

1012002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417 (or 3406 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1012002012 is about 31811.9790644971. The cubic root of 1012002012 is about 1003.9847711748.

Adding to 1012002012 its reverse (2102002101), we get a palindrome (3114004113).

The spelling of 1012002012 in words is "one billion, twelve million, two thousand, twelve".