1212210211222 has 16 divisors (see below), whose sum is σ = 1827943576272. Its totient is φ = 602897027040.

The previous prime is 1212210211207. The next prime is 1212210211237. The reversal of 1212210211222 is 2221120122121.

It is an interprime number because it is at equal distance from previous prime (1212210211207) and next prime (1212210211237).

It is a self number, because there is not a number n which added to its sum of digits gives 1212210211222.

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, 1487773 + ... + 2153575.

It is an arithmetic number, because the mean of its divisors is an integer number (114246473517).

Almost surely, 2^{1212210211222} is an apocalyptic number.

1212210211222 is a deficient number, since it is larger than the sum of its proper divisors (615733365050).

1212210211222 is a wasteful number, since it uses less digits than its factorization.

1212210211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670623.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212210211222 its reverse (2221120122121), we get a palindrome (3433330333343).

The spelling of 1212210211222 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred eleven thousand, two hundred twenty-two".