1210120210105 has 8 divisors (see below), whose sum is σ = 1452150160200. Its totient is φ = 968092229376.

The previous prime is 1210120210099. The next prime is 1210120210109. The reversal of 1210120210105 is 5010120210121.

It can be written as a sum of positive squares in 4 ways, for example, as 664857590544 + 545262619561 = 815388^2 + 738419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210120210105 - 2¹⁵ = 1210120177337 is a prime.

It is a super-2 number, since 2×1210120210105² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1210120210109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109211 + ... + 2620879.

It is an arithmetic number, because the mean of its divisors is an integer number (181518770025).

Almost surely, 2^{1210120210105} is an apocalyptic number.

It is an amenable number.

1210120210105 is a deficient number, since it is larger than the sum of its proper divisors (242029950095).

1210120210105 is an equidigital number, since it uses as much as digits as its factorization.

1210120210105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984683.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1210120210105 its sum of digits (16), we get a palindrome (1210120210121).

Adding to 1210120210105 its reverse (5010120210121), we get a palindrome (6220240420226).

The spelling of 1210120210105 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred ten thousand, one hundred five".