20011010212 has 12 divisors (see below), whose sum is σ = 35169566796. Its totient is φ = 9962562560.

The previous prime is 20011010189. The next prime is 20011010219. The reversal of 20011010212 is 21201011002.

It can be written as a sum of positive squares in 2 ways, for example, as 8254812736 + 11756197476 = 90856^2 + 108426^2 .

It is not an unprimeable number, because it can be changed into a prime (20011010219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10734589 + ... + 10736452.

It is an arithmetic number, because the mean of its divisors is an integer number (2930797233).

Almost surely, 2^20011010212 is an apocalyptic number.

It is an amenable number.

20011010212 is a deficient number, since it is larger than the sum of its proper divisors (15158556584).

20011010212 is a wasteful number, since it uses less digits than its factorization.

20011010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21471278 (or 21471276 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20011010212 its reverse (21201011002), we get a palindrome (41212021214).

The spelling of 20011010212 in words is "twenty billion, eleven million, ten thousand, two hundred twelve".