12221021212010 has 64 divisors (see below), whose sum is σ = 24589279862784. Its totient is φ = 4342690195200.

The previous prime is 12221021212007. The next prime is 12221021212063. The reversal of 12221021212010 is 1021212012221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221021212010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7647674 + ... + 9106533.

It is an arithmetic number, because the mean of its divisors is an integer number (384207497856).

Almost surely, 2^{12221021212010} is an apocalyptic number.

12221021212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221021212010 is an abundant number, since it is smaller than the sum of its proper divisors (12368258650774).

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

12221021212010 is a wasteful number, since it uses less digits than its factorization.

12221021212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16754439.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221021212010 its reverse (1021212012221), we get a palindrome (13242233224231).

The spelling of 12221021212010 in words is "twelve trillion, two hundred twenty-one billion, twenty-one million, two hundred twelve thousand, ten".