12112122021102 has 48 divisors (see below), whose sum is σ = 27168696116640. Its totient is φ = 3895162318656.

The previous prime is 12112122021101. The next prime is 12112122021149. The reversal of 12112122021102 is 20112022121121.

12112122021102 is a `hidden beast` number, since 1 + 211 + 21 + 220 + 211 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112122021101) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8223633 + ... + 9583964.

It is an arithmetic number, because the mean of its divisors is an integer number (566014502430).

Almost surely, 2^{12112122021102} is an apocalyptic number.

12112122021102 is an abundant number, since it is smaller than the sum of its proper divisors (15056574095538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12112122021102 is a wasteful number, since it uses less digits than its factorization.

12112122021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17808937 (or 17808934 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12112122021102 its reverse (20112022121121), we get a palindrome (32224144142223).

The spelling of 12112122021102 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-two million, twenty-one thousand, one hundred two".