212120222120 has 16 divisors (see below), whose sum is σ = 477270499860. Its totient is φ = 84848088832.

The previous prime is 212120222117. The next prime is 212120222131. The reversal of 212120222120 is 21222021212.

It is a happy number.

212120222120 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 2 ways, for example, as 211951585924 + 168636196 = 460382^2 + 12986^2 .

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 3 ways as a sum of consecutive naturals, for example, 2651502737 + ... + 2651502816.

Almost surely, 2^212120222120 is an apocalyptic number.

212120222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120222120 is an abundant number, since it is smaller than the sum of its proper divisors (265150277740).

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

212120222120 is a wasteful number, since it uses less digits than its factorization.

212120222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303005564 (or 5303005560 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120222120 its reverse (21222021212), we get a palindrome (233342243332).

The spelling of 212120222120 in words is "two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty".