12012002010 has 24 divisors (see below), whose sum is σ = 31231205460. Its totient is φ = 3203200512.

The previous prime is 12012001999. The next prime is 12012002021. The reversal of 12012002010 is 1020021021.

It is an interprime number because it is at equal distance from previous prime (12012001999) and next prime (12012002021).

It can be written as a sum of positive squares in 2 ways, for example, as 10405836081 + 1606165929 = 102009^2 + 40077^2 .

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 = 12012001983 and 12012002001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66733255 + ... + 66733434.

Almost surely, 2^12012002010 is an apocalyptic number.

12012002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12012002010 is an abundant number, since it is smaller than the sum of its proper divisors (19219203450).

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

12012002010 is a wasteful number, since it uses less digits than its factorization.

12012002010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133466702 (or 133466699 counting only the distinct ones).

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

Adding to 12012002010 its reverse (1020021021), we get a palindrome (13032023031).

The spelling of 12012002010 in words is "twelve billion, twelve million, two thousand, ten".