212220001112210 has 64 divisors (see below), whose sum is σ = 470162008576512. Its totient is φ = 67162263215616.

The previous prime is 212220001112113. The next prime is 212220001112243. The reversal of 212220001112210 is 12211100022212.

It is a super-2 number, since 2×212220001112210² (a number of 29 digits) contains 22 as substring.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 29657939 + ... + 36111401.

It is an arithmetic number, because the mean of its divisors is an integer number (7346281384008).

Almost surely, 2^{212220001112210} is an apocalyptic number.

212220001112210 is an abundant number, since it is smaller than the sum of its proper divisors (257942007464302).

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

212220001112210 is a wasteful number, since it uses less digits than its factorization.

212220001112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489627.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212220001112210 its reverse (12211100022212), we get a palindrome (224431101134422).

The spelling of 212220001112210 in words is "two hundred twelve trillion, two hundred twenty billion, one million, one hundred twelve thousand, two hundred ten".