12221211120012 has 36 divisors (see below), whose sum is σ = 31071075300720. Its totient is φ = 4050189424992.

The previous prime is 12221211119969. The next prime is 12221211120029. The reversal of 12221211120012 is 21002111212221.

12221211120012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 981144312 + ... + 981156767.

It is an arithmetic number, because the mean of its divisors is an integer number (863085425020).

Almost surely, 2^{12221211120012} is an apocalyptic number.

12221211120012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221211120012 is an abundant number, since it is smaller than the sum of its proper divisors (18849864180708).

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

12221211120012 is a wasteful number, since it uses less digits than its factorization.

12221211120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962301262 (or 1962301257 counting only the distinct ones).

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

Adding to 12221211120012 its reverse (21002111212221), we get a palindrome (33223322332233).

The spelling of 12221211120012 in words is "twelve trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, twelve".