1222121212102 has 96 divisors (see below), whose sum is σ = 2339811129600. Its totient is φ = 467538122304.

The previous prime is 1222121212087. The next prime is 1222121212133. The reversal of 1222121212102 is 2012121212221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1222121212102.

It is a congruent number.

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 9363024 + ... + 9492652.

It is an arithmetic number, because the mean of its divisors is an integer number (24373032600).

Almost surely, 2^{1222121212102} is an apocalyptic number.

1222121212102 is a deficient number, since it is larger than the sum of its proper divisors (1117689917498).

1222121212102 is a wasteful number, since it uses less digits than its factorization.

1222121212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129770 (or 129747 counting only the distinct ones).

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

Adding to 1222121212102 its reverse (2012121212221), we get a palindrome (3234242424323).

The spelling of 1222121212102 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred two".