12221001002000 has 160 divisors (see below), whose sum is σ = 34151325960960. Its totient is φ = 4142977766400.

The previous prime is 12221001001991. The next prime is 12221001002017. The reversal of 12221001002000 is 20010012221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3658094 + ... + 6150093.

It is an arithmetic number, because the mean of its divisors is an integer number (213445787256).

Almost surely, 2^{12221001002000} is an apocalyptic number.

12221001002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221001002000 is an abundant number, since it is smaller than the sum of its proper divisors (21930324958960).

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

12221001002000 is an equidigital number, since it uses as much as digits as its factorization.

12221001002000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9808306 (or 9808290 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12221001002000 its reverse (20010012221), we get a palindrome (12241011014221).

The spelling of 12221001002000 in words is "twelve trillion, two hundred twenty-one billion, one million, two thousand".