20011010012 has 192 divisors, whose sum is σ = 45798359040. Its totient is φ = 7451136000.

The previous prime is 20011010011. The next prime is 20011010017. The reversal of 20011010012 is 21001011002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011010011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43220093 + ... + 43220555.

It is an arithmetic number, because the mean of its divisors is an integer number (238533120).

Almost surely, 2^20011010012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22899179520).

20011010012 is an abundant number, since it is smaller than the sum of its proper divisors (25787349028).

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

20011010012 is a wasteful number, since it uses less digits than its factorization.

20011010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20011010012 its reverse (21001011002), we get a palindrome (41012021014).

The spelling of 20011010012 in words is "twenty billion, eleven million, ten thousand, twelve".