12221001201210 has 128 divisors (see below), whose sum is σ = 29794324089600. Its totient is φ = 3207864735744.

The previous prime is 12221001201173. The next prime is 12221001201229. The reversal of 12221001201210 is 1210210012221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12221001201210.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 359455932 + ... + 359489928.

It is an arithmetic number, because the mean of its divisors is an integer number (232768156950).

Almost surely, 2^{12221001201210} is an apocalyptic number.

12221001201210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221001201210 is an abundant number, since it is smaller than the sum of its proper divisors (17573322888390).

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

12221001201210 is a wasteful number, since it uses less digits than its factorization.

12221001201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34880.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12221001201210 its reverse (1210210012221), we get a palindrome (13431211213431).

The spelling of 12221001201210 in words is "twelve trillion, two hundred twenty-one billion, one million, two hundred one thousand, two hundred ten".