12221012222000 has 80 divisors (see below), whose sum is σ = 29553367731264. Its totient is φ = 4887915200000.

The previous prime is 12221012221883. The next prime is 12221012222053. The reversal of 12221012222000 is 22221012221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 12221012222000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20001020 + ... + 20602980.

Almost surely, 2^{12221012222000} is an apocalyptic number.

12221012222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221012222000 is an abundant number, since it is smaller than the sum of its proper divisors (17332355509264).

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

12221012222000 is a wasteful number, since it uses less digits than its factorization.

12221012222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612135 (or 612119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12221012222000 its reverse (22221012221), we get a palindrome (12243233234221).

The spelling of 12221012222000 in words is "twelve trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand".