3000021012 has 36 divisors (see below), whose sum is σ = 7612244640. Its totient is φ = 996201552.

The previous prime is 3000020993. The next prime is 3000021041. The reversal of 3000021012 is 2101200003.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 3000020985 and 3000021003.

It is a congruent number.

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, 148962 + ... + 167897.

It is an arithmetic number, because the mean of its divisors is an integer number (211451240).

Almost surely, 2^3000021012 is an apocalyptic number.

It is an amenable number.

3000021012 is an abundant number, since it is smaller than the sum of its proper divisors (4612223628).

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

3000021012 is a wasteful number, since it uses less digits than its factorization.

3000021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317132 (or 317127 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 3000021012 is about 54772.4475626204. The cubic root of 3000021012 is about 1442.2529374715.

Adding to 3000021012 its reverse (2101200003), we get a palindrome (5101221015).

The spelling of 3000021012 in words is "three billion, twenty-one thousand, twelve".