12120211221010 has 32 divisors (see below), whose sum is σ = 21906180270000. Its totient is φ = 4828143237120.

The previous prime is 12120211220833. The next prime is 12120211221023. The reversal of 12120211221010 is 1012211202121.

It can be written as a sum of positive squares in 8 ways, for example, as 549512346681 + 11570698874329 = 741291^2 + 3401573^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5887866 + ... + 7675114.

Almost surely, 2^{12120211221010} is an apocalyptic number.

12120211221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120211221010 is a deficient number, since it is larger than the sum of its proper divisors (9785969048990).

12120211221010 is a wasteful number, since it uses less digits than its factorization.

12120211221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790046.

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

Adding to 12120211221010 its reverse (1012211202121), we get a palindrome (13132422423131).

The spelling of 12120211221010 in words is "twelve trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, ten".