212000122221210 has 24 divisors (see below), whose sum is σ = 551200317775380. Its totient is φ = 56533365925632.

The previous prime is 212000122221149. The next prime is 212000122221221. The reversal of 212000122221210 is 12122221000212.

It is a happy number.

212000122221210 is a `hidden beast` number, since 21 + 200 + 0 + 1 + 222 + 212 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 194904187934481 + 17095934286729 = 13960809^2 + 4134723^2 .

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

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 11 ways as a sum of consecutive naturals, for example, 1177778456695 + ... + 1177778456874.

Almost surely, 2^{212000122221210} is an apocalyptic number.

212000122221210 is an abundant number, since it is smaller than the sum of its proper divisors (339200195554170).

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

212000122221210 is a wasteful number, since it uses less digits than its factorization.

212000122221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355556913582 (or 2355556913579 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212000122221210 its reverse (12122221000212), we get a palindrome (224122343221422).

The spelling of 212000122221210 in words is "two hundred twelve trillion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred ten".