2010021012 has 18 divisors (see below), whose sum is σ = 5080886538. Its totient is φ = 670006992.

The previous prime is 2010021007. The next prime is 2010021017. The reversal of 2010021012 is 2101200102.

It is an interprime number because it is at equal distance from previous prime (2010021007) and next prime (2010021017).

It can be written as a sum of positive squares in only one way, i.e., 1597281156 + 412739856 = 39966^2 + 20316^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 = 2010020985 and 2010021003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2010021017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27916923 + ... + 27916994.

Almost surely, 2^2010021012 is an apocalyptic number.

It is an amenable number.

2010021012 is an abundant number, since it is smaller than the sum of its proper divisors (3070865526).

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

2010021012 is a wasteful number, since it uses less digits than its factorization.

2010021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55833927 (or 55833922 counting only the distinct ones).

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

The square root of 2010021012 is about 44833.2578784991. The cubic root of 2010021012 is about 1262.0218258017.

Adding to 2010021012 its reverse (2101200102), we get a palindrome (4111221114).

The spelling of 2010021012 in words is "two billion, ten million, twenty-one thousand, twelve".