12102221200000 has 96 divisors (see below), whose sum is σ = 30135439450620. Its totient is φ = 4840888320000.

The previous prime is 12102221199949. The next prime is 12102221200061. The reversal of 12102221200000 is 212220121.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1343243912256 + 10758977287744 = 1158984^2 + 3280088^2 .

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, 14727777 + ... + 15527776.

Almost surely, 2^{12102221200000} is an apocalyptic number.

12102221200000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12102221200000 is an abundant number, since it is smaller than the sum of its proper divisors (18033218250620).

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

12102221200000 is an frugal number, since it uses more digits than its factorization.

12102221200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30255592 (or 30255560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12102221200000 its reverse (212220121), we get a palindrome (12102433420121).

The spelling of 12102221200000 in words is "twelve trillion, one hundred two billion, two hundred twenty-one million, two hundred thousand".