20012320212 has 48 divisors (see below), whose sum is σ = 47922705600. Its totient is φ = 6497521920.

The previous prime is 20012320187. The next prime is 20012320241. The reversal of 20012320212 is 21202321002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012320191 and 20012320200.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52489 + ... + 206832.

It is an arithmetic number, because the mean of its divisors is an integer number (998389700).

Almost surely, 2^20012320212 is an apocalyptic number.

It is an amenable number.

20012320212 is an abundant number, since it is smaller than the sum of its proper divisors (27910385388).

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

20012320212 is a wasteful number, since it uses less digits than its factorization.

20012320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259496 (or 259494 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20012320212 its reverse (21202321002), we get a palindrome (41214641214).

The spelling of 20012320212 in words is "twenty billion, twelve million, three hundred twenty thousand, two hundred twelve".