212011220003220 has 144 divisors (see below), whose sum is σ = 720525601006848. Its totient is φ = 50007560474880.

The previous prime is 212011220003201. The next prime is 212011220003237. The reversal of 212011220003220 is 22300022110212.

212011220003220 is a `hidden beast` number, since 2 + 120 + 1 + 1 + 220 + 0 + 0 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212011220003193 and 212011220003202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1446904764 + ... + 1447051283.

It is an arithmetic number, because the mean of its divisors is an integer number (5003650006992).

Almost surely, 2^{212011220003220} is an apocalyptic number.

212011220003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212011220003220 is an abundant number, since it is smaller than the sum of its proper divisors (508514381003628).

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

212011220003220 is a wasteful number, since it uses less digits than its factorization.

212011220003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893956110 (or 2893956105 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212011220003220 its reverse (22300022110212), we get a palindrome (234311242113432).

The spelling of 212011220003220 in words is "two hundred twelve trillion, eleven billion, two hundred twenty million, three thousand, two hundred twenty".