20010010212 has 72 divisors (see below), whose sum is σ = 53160045120. Its totient is φ = 6334067520.

The previous prime is 20010010211. The next prime is 20010010247. The reversal of 20010010212 is 21201001002.

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 = 20010010194 and 20010010203.

It is not an unprimeable number, because it can be changed into a prime (20010010211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28162 + ... + 202022.

It is an arithmetic number, because the mean of its divisors is an integer number (738333960).

Almost surely, 2^20010010212 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 20010010212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26580022560).

20010010212 is an abundant number, since it is smaller than the sum of its proper divisors (33150034908).

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

20010010212 is a wasteful number, since it uses less digits than its factorization.

20010010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174033 (or 174028 counting only the distinct ones).

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

Adding to 20010010212 its reverse (21201001002), we get a palindrome (41211011214).

The spelling of 20010010212 in words is "twenty billion, ten million, ten thousand, two hundred twelve".