212225205100 has 36 divisors (see below), whose sum is σ = 460590379704. Its totient is φ = 84878711680.

The previous prime is 212225205077. The next prime is 212225205107. The reversal of 212225205100 is 1502522212.

It is not an unprimeable number, because it can be changed into a prime (212225205107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629007 + ... + 905593.

It is an arithmetic number, because the mean of its divisors is an integer number (12794177214).

Almost surely, 2^212225205100 is an apocalyptic number.

212225205100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212225205100 is an abundant number, since it is smaller than the sum of its proper divisors (248365174604).

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

212225205100 is a wasteful number, since it uses less digits than its factorization.

212225205100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284274 (or 284267 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 212225205100 its reverse (1502522212), we get a palindrome (213727727312).

The spelling of 212225205100 in words is "two hundred twelve billion, two hundred twenty-five million, two hundred five thousand, one hundred".