212222222021222 has 16 divisors (see below), whose sum is σ = 367411597957152. Its totient is φ = 90051862243200.

The previous prime is 212222222021219. The next prime is 212222222021261. The reversal of 212222222021222 is 222120222222212.

It is a junction number, because it is equal to n+sod(n) for n = 212222222021191 and 212222222021200.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 75043217123 + ... + 75043219950.

It is an arithmetic number, because the mean of its divisors is an integer number (22963224872322).

Almost surely, 2^{212222222021222} is an apocalyptic number.

212222222021222 is a deficient number, since it is larger than the sum of its proper divisors (155189375935930).

212222222021222 is a wasteful number, since it uses less digits than its factorization.

212222222021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150086437183.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 212222222021222 its reverse (222120222222212), we get a palindrome (434342444243434).

The spelling of 212222222021222 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-two".