12212121121102 has 16 divisors (see below), whose sum is σ = 21845284987392. Its totient is φ = 5006211142680.

The previous prime is 12212121121051. The next prime is 12212121121111. The reversal of 12212121121102 is 20112112121221.

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 12212121121102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18962920674 + ... + 18962921317.

It is an arithmetic number, because the mean of its divisors is an integer number (1365330311712).

Almost surely, 2^{12212121121102} is an apocalyptic number.

12212121121102 is a deficient number, since it is larger than the sum of its proper divisors (9633163866290).

12212121121102 is a wasteful number, since it uses less digits than its factorization.

12212121121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37925842023.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12212121121102 its reverse (20112112121221), we get a palindrome (32324233242323).

The spelling of 12212121121102 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred two".