212012211011222 has 4 divisors (see below), whose sum is σ = 318018316516836. Its totient is φ = 106006105505610.

The previous prime is 212012211011177. The next prime is 212012211011233. The reversal of 212012211011222 is 222110112210212.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 212012211011194 and 212012211011203.

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 as a sum of consecutive naturals, namely, 53003052752804 + ... + 53003052752807.

It is an arithmetic number, because the mean of its divisors is an integer number (79504579129209).

Almost surely, 2^{212012211011222} is an apocalyptic number.

212012211011222 is a deficient number, since it is larger than the sum of its proper divisors (106006105505614).

212012211011222 is a wasteful number, since it uses less digits than its factorization.

212012211011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106006105505613.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212012211011222 its reverse (222110112210212), we get a palindrome (434122323221434).

The spelling of 212012211011222 in words is "two hundred twelve trillion, twelve billion, two hundred eleven million, eleven thousand, two hundred twenty-two".