10103123121 has 64 divisors (see below), whose sum is σ = 16764303360. Its totient is φ = 5270054400.

The previous prime is 10103123101. The next prime is 10103123159. The reversal of 10103123121 is 12132130101.

It is a happy number.

It is not a de Polignac number, because 10103123121 - 2⁷ = 10103122993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10103123121.

It is not an unprimeable number, because it can be changed into a prime (10103123101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16810221 + ... + 16810821.

It is an arithmetic number, because the mean of its divisors is an integer number (261942240).

Almost surely, 2^10103123121 is an apocalyptic number.

It is an amenable number.

10103123121 is a deficient number, since it is larger than the sum of its proper divisors (6661180239).

10103123121 is a wasteful number, since it uses less digits than its factorization.

10103123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10103123121 its reverse (12132130101), we get a palindrome (22235253222).

The spelling of 10103123121 in words is "ten billion, one hundred three million, one hundred twenty-three thousand, one hundred twenty-one".