10121231121 has 64 divisors (see below), whose sum is σ = 14750760960. Its totient is φ = 6156846080.

The previous prime is 10121231089. The next prime is 10121231147. The reversal of 10121231121 is 12113212101.

10121231121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121231121 - 2⁵ = 10121231089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10121231121.

It is not an unprimeable number, because it can be changed into a prime (10121231161) 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 63 ways as a sum of consecutive naturals, for example, 26018395 + ... + 26018783.

It is an arithmetic number, because the mean of its divisors is an integer number (230480640).

Almost surely, 2^10121231121 is an apocalyptic number.

It is an amenable number.

10121231121 is a deficient number, since it is larger than the sum of its proper divisors (4629529839).

10121231121 is a wasteful number, since it uses less digits than its factorization.

10121231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 10121231121 its reverse (12113212101), we get a palindrome (22234443222).

The spelling of 10121231121 in words is "ten billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty-one".