12021110404212 has 96 divisors (see below), whose sum is σ = 34697403240192. Its totient is φ = 3154309272576.

The previous prime is 12021110404211. The next prime is 12021110404223. The reversal of 12021110404212 is 21240401112021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021110404211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27724833 + ... + 28155080.

It is an arithmetic number, because the mean of its divisors is an integer number (361431283752).

Almost surely, 2^{12021110404212} is an apocalyptic number.

12021110404212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021110404212 is an abundant number, since it is smaller than the sum of its proper divisors (22676292835980).

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

12021110404212 is a wasteful number, since it uses less digits than its factorization.

12021110404212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55880137 (or 55880135 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12021110404212 its reverse (21240401112021), we get a palindrome (33261511516233).

The spelling of 12021110404212 in words is "twelve trillion, twenty-one billion, one hundred ten million, four hundred four thousand, two hundred twelve".