20010002012 has 144 divisors (see below), whose sum is σ = 48971970432. Its totient is φ = 7028622720.

The previous prime is 20010002009. The next prime is 20010002027. The reversal of 20010002012 is 21020001002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1196903 + ... + 1213505.

It is an arithmetic number, because the mean of its divisors is an integer number (340083128).

Almost surely, 2^20010002012 is an apocalyptic number.

20010002012 is a gapful number since it is divisible by the number (22) 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 20010002012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24485985216).

20010002012 is an abundant number, since it is smaller than the sum of its proper divisors (28961968420).

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

20010002012 is a wasteful number, since it uses less digits than its factorization.

20010002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16688 (or 16679 counting only the distinct ones).

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

Adding to 20010002012 its reverse (21020001002), we get a palindrome (41030003014).

The spelling of 20010002012 in words is "twenty billion, ten million, two thousand, twelve".