210012221003220 has 72 divisors (see below), whose sum is σ = 654254288515464. Its totient is φ = 54489657339648.

The previous prime is 210012221003213. The next prime is 210012221003243. The reversal of 210012221003220 is 22300122210012.

210012221003220 is a `hidden beast` number, since 2 + 10 + 0 + 122 + 210 + 0 + 322 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20630091025296 + 189382129977924 = 4542036^2 + 13761618^2 .

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 = 210012221003193 and 210012221003202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15766676599 + ... + 15766689918.

Almost surely, 2^{210012221003220} is an apocalyptic number.

210012221003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210012221003220 is an abundant number, since it is smaller than the sum of its proper divisors (444242067512244).

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

210012221003220 is a wasteful number, since it uses less digits than its factorization.

210012221003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31533366569 (or 31533366564 counting only the distinct ones).

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

Adding to 210012221003220 its reverse (22300122210012), we get a palindrome (232312343213232).

The spelling of 210012221003220 in words is "two hundred ten trillion, twelve billion, two hundred twenty-one million, three thousand, two hundred twenty".