20001010212 has 84 divisors (see below), whose sum is σ = 55240832080. Its totient is φ = 6316090992.

The previous prime is 20001010181. The next prime is 20001010217. The reversal of 20001010212 is 21201010002.

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 = 20001010194 and 20001010203.

It is not an unprimeable number, because it can be changed into a prime (20001010217) 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 27 ways as a sum of consecutive naturals, for example, 125098 + ... + 235905.

Almost surely, 2^20001010212 is an apocalyptic number.

It is an amenable number.

20001010212 is an abundant number, since it is smaller than the sum of its proper divisors (35239821868).

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

20001010212 is a wasteful number, since it uses less digits than its factorization.

20001010212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361044 (or 361027 counting only the distinct ones).

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

Adding to 20001010212 its reverse (21201010002), we get a palindrome (41202020214).

The spelling of 20001010212 in words is "twenty billion, one million, ten thousand, two hundred twelve".