212001000122222 has 16 divisors (see below), whose sum is σ = 325780181496000. Its totient is φ = 103407964181760.

The previous prime is 212001000122203. The next prime is 212001000122279. The reversal of 212001000122222 is 222221000100212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212001000122222.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 88280822 + ... + 90650457.

It is an arithmetic number, because the mean of its divisors is an integer number (20361261343500).

Almost surely, 2^{212001000122222} is an apocalyptic number.

212001000122222 is a deficient number, since it is larger than the sum of its proper divisors (113779181373778).

212001000122222 is a wasteful number, since it uses less digits than its factorization.

212001000122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178945771.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212001000122222 its reverse (222221000100212), we get a palindrome (434222000222434).

The spelling of 212001000122222 in words is "two hundred twelve trillion, one billion, one hundred twenty-two thousand, two hundred twenty-two".