211210211121222 has 64 divisors (see below), whose sum is σ = 442537599052800. Its totient is φ = 67112293946880.

The previous prime is 211210211121211. The next prime is 211210211121227. The reversal of 211210211121222 is 222121112012112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210211121227) by changing a digit.

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, 323213197 + ... + 323866007.

It is an arithmetic number, because the mean of its divisors is an integer number (6914649985200).

Almost surely, 2^{211210211121222} is an apocalyptic number.

211210211121222 is an abundant number, since it is smaller than the sum of its proper divisors (231327387931578).

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

211210211121222 is a wasteful number, since it uses less digits than its factorization.

211210211121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676461.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211210211121222 its reverse (222121112012112), we get a palindrome (433331323133334).

The spelling of 211210211121222 in words is "two hundred eleven trillion, two hundred ten billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".