212222002100 has 36 divisors (see below), whose sum is σ = 460711244364. Its totient is φ = 84853870080.

The previous prime is 212222002051. The next prime is 212222002129. The reversal of 212222002100 is 1200222212.

212222002100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 43746232336 + 168475769764 = 209156^2 + 410458^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 191717 + ... + 679116.

Almost surely, 2^212222002100 is an apocalyptic number.

212222002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222002100 is an abundant number, since it is smaller than the sum of its proper divisors (248489242264).

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

212222002100 is a wasteful number, since it uses less digits than its factorization.

212222002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873284 (or 873277 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212222002100 its reverse (1200222212), we get a palindrome (213422224312).

The spelling of 212222002100 in words is "two hundred twelve billion, two hundred twenty-two million, two thousand, one hundred".