12021212001222 has 24 divisors (see below), whose sum is σ = 26046155373264. Its totient is φ = 4007040507504.

The previous prime is 12021212001187. The next prime is 12021212001229. The reversal of 12021212001222 is 22210021212021.

It is a happy number.

12021212001222 is a `hidden beast` number, since 120 + 2 + 121 + 200 + 1 + 222 = 666.

12021212001222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12021212001195 and 12021212001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021212001229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13303 + ... + 4903325.

It is an arithmetic number, because the mean of its divisors is an integer number (1085256473886).

Almost surely, 2^{12021212001222} is an apocalyptic number.

12021212001222 is an abundant number, since it is smaller than the sum of its proper divisors (14024943372042).

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

12021212001222 is a wasteful number, since it uses less digits than its factorization.

12021212001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026604 (or 5026601 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021212001222 its reverse (22210021212021), we get a palindrome (34231233213243).

The spelling of 12021212001222 in words is "twelve trillion, twenty-one billion, two hundred twelve million, one thousand, two hundred twenty-two".