12211021221010 has 16 divisors (see below), whose sum is σ = 21982487477976. Its totient is φ = 4883819759488.

The previous prime is 12211021220989. The next prime is 12211021221041. The reversal of 12211021221010 is 1012212011221.

It can be written as a sum of positive squares in 4 ways, for example, as 10270608438841 + 1940412782169 = 3204779^2 + 1392987^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73503997 + ... + 73669936.

Almost surely, 2^{12211021221010} is an apocalyptic number.

12211021221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12211021221010 is a deficient number, since it is larger than the sum of its proper divisors (9771466256966).

12211021221010 is a wasteful number, since it uses less digits than its factorization.

12211021221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147182237.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12211021221010 its reverse (1012212011221), we get a palindrome (13223233232231).

The spelling of 12211021221010 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, ten".