212001211222 has 4 divisors (see below), whose sum is σ = 318001816836. Its totient is φ = 106000605610.

The previous prime is 212001211207. The next prime is 212001211223. The reversal of 212001211222 is 222112100212.

It is a happy number.

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 = 212001211196 and 212001211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53000302804 + ... + 53000302807.

It is an arithmetic number, because the mean of its divisors is an integer number (79500454209).

Almost surely, 2^212001211222 is an apocalyptic number.

212001211222 is a deficient number, since it is larger than the sum of its proper divisors (106000605614).

212001211222 is a wasteful number, since it uses less digits than its factorization.

212001211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106000605613.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212001211222 its reverse (222112100212), we get a palindrome (434113311434).

The spelling of 212001211222 in words is "two hundred twelve billion, one million, two hundred eleven thousand, two hundred twenty-two".