10515112123 has 2 divisors, whose sum is σ = 10515112124. Its totient is φ = 10515112122.

The previous prime is 10515112099. The next prime is 10515112129. The reversal of 10515112123 is 32121151501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10515112123 - 2²¹ = 10513014971 is a prime.

It is a super-2 number, since 2×10515112123² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10515112094 and 10515112103.

It is not a weakly prime, because it can be changed into another prime (10515112129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257556061 + 5257556062.

It is an arithmetic number, because the mean of its divisors is an integer number (5257556062).

Almost surely, 2^10515112123 is an apocalyptic number.

10515112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10515112123 is an equidigital number, since it uses as much as digits as its factorization.

10515112123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 10515112123 its reverse (32121151501), we get a palindrome (42636263624).

The spelling of 10515112123 in words is "ten billion, five hundred fifteen million, one hundred twelve thousand, one hundred twenty-three".