12212221221122 has 32 divisors (see below), whose sum is σ = 20256572568960. Its totient is φ = 5487082427520.

The previous prime is 12212221221113. The next prime is 12212221221131. The reversal of 12212221221122 is 22112212221221.

It is an interprime number because it is at equal distance from previous prime (12212221221113) and next prime (12212221221131).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38487779 + ... + 38803782.

It is an arithmetic number, because the mean of its divisors is an integer number (633017892780).

Almost surely, 2^{12212221221122} is an apocalyptic number.

12212221221122 is a deficient number, since it is larger than the sum of its proper divisors (8044351347838).

12212221221122 is a wasteful number, since it uses less digits than its factorization.

12212221221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77291738.

The product of its digits is 512, while the sum is 23.

Adding to 12212221221122 its reverse (22112212221221), we get a palindrome (34324433442343).

The spelling of 12212221221122 in words is "twelve trillion, two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".