12212211021112 has 16 divisors (see below), whose sum is σ = 22901967933840. Its totient is φ = 6105019572096.

The previous prime is 12212211021103. The next prime is 12212211021149. The reversal of 12212211021112 is 21112011221221.

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 12212211021112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135694513 + ... + 135784480.

It is an arithmetic number, because the mean of its divisors is an integer number (1431372995865).

Almost surely, 2^{12212211021112} is an apocalyptic number.

It is an amenable number.

12212211021112 is a deficient number, since it is larger than the sum of its proper divisors (10689756912728).

12212211021112 is a wasteful number, since it uses less digits than its factorization.

12212211021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271484622 (or 271484618 counting only the distinct ones).

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

Adding to 12212211021112 its reverse (21112011221221), we get a palindrome (33324222242333).

The spelling of 12212211021112 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, twenty-one thousand, one hundred twelve".