212210011101222 has 56 divisors (see below), whose sum is σ = 478513449082440. Its totient is φ = 70550029892160.

The previous prime is 212210011101203. The next prime is 212210011101223. The reversal of 212210011101222 is 222101110012212.

212210011101222 is a `hidden beast` number, since 212 + 210 + 0 + 11 + 10 + 1 + 222 = 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 = 212210011101195 and 212210011101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210011101223) 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 27 ways as a sum of consecutive naturals, for example, 191464179 + ... + 192569342.

Almost surely, 2^{212210011101222} is an apocalyptic number.

212210011101222 is an abundant number, since it is smaller than the sum of its proper divisors (266303437981218).

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

212210011101222 is an equidigital number, since it uses as much as digits as its factorization.

212210011101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384033920 (or 384033905 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212210011101222 its reverse (222101110012212), we get a palindrome (434311121113434).

The spelling of 212210011101222 in words is "two hundred twelve trillion, two hundred ten billion, eleven million, one hundred one thousand, two hundred twenty-two".