20212012212 has 24 divisors (see below), whose sum is σ = 53898699456. Its totient is φ = 5774860608.

The previous prime is 20212012199. The next prime is 20212012253. The reversal of 20212012212 is 21221021202.

It is a junction number, because it is equal to n+sod(n) for n = 20212012191 and 20212012200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120309513 + ... + 120309680.

It is an arithmetic number, because the mean of its divisors is an integer number (2245779144).

Almost surely, 2^20212012212 is an apocalyptic number.

It is an amenable number.

20212012212 is an abundant number, since it is smaller than the sum of its proper divisors (33686687244).

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

20212012212 is a wasteful number, since it uses less digits than its factorization.

20212012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240619207 (or 240619205 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20212012212 its reverse (21221021202), we get a palindrome (41433033414).

The spelling of 20212012212 in words is "twenty billion, two hundred twelve million, twelve thousand, two hundred twelve".