1210112121101 has 4 divisors (see below), whose sum is σ = 1303197668892. Its totient is φ = 1117026573312.

The previous prime is 1210112121089. The next prime is 1210112121121. The reversal of 1210112121101 is 1011212110121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141522678025 + 1068589443076 = 376195^2 + 1033726^2 .

It is not a de Polignac number, because 1210112121101 - 2¹⁸ = 1210111858957 is a prime.

It is a super-2 number, since 2×1210112121101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210112121121) 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 3 ways as a sum of consecutive naturals, for example, 46542773876 + ... + 46542773901.

It is an arithmetic number, because the mean of its divisors is an integer number (325799417223).

Almost surely, 2^{1210112121101} is an apocalyptic number.

It is an amenable number.

1210112121101 is a deficient number, since it is larger than the sum of its proper divisors (93085547791).

1210112121101 is an equidigital number, since it uses as much as digits as its factorization.

1210112121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93085547790.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1210112121101 its reverse (1011212110121), we get a palindrome (2221324231222).

The spelling of 1210112121101 in words is "one trillion, two hundred ten billion, one hundred twelve million, one hundred twenty-one thousand, one hundred one".