20212210228 has 12 divisors (see below), whose sum is σ = 40424420512. Its totient is φ = 8662375800.

The previous prime is 20212210223. The next prime is 20212210229. The reversal of 20212210228 is 82201221202.

20212210228 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20212210199 and 20212210208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360932298 + ... + 360932353.

Almost surely, 2^20212210228 is an apocalyptic number.

20212210228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20212210228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20212210228 is a wasteful number, since it uses less digits than its factorization.

20212210228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721864662 (or 721864660 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 20212210228 in words is "twenty billion, two hundred twelve million, two hundred ten thousand, two hundred twenty-eight".