10515223123 has 2 divisors, whose sum is σ = 10515223124. Its totient is φ = 10515223122.

The previous prime is 10515223079. The next prime is 10515223151. The reversal of 10515223123 is 32132251501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10515223123 - 2¹⁷ = 10515092051 is a prime.

It is a super-2 number, since 2×10515223123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10515223153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257611561 + 5257611562.

It is an arithmetic number, because the mean of its divisors is an integer number (5257611562).

Almost surely, 2^10515223123 is an apocalyptic number.

10515223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10515223123 is an equidigital number, since it uses as much as digits as its factorization.

10515223123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 10515223123 its reverse (32132251501), we get a palindrome (42647474624).

The spelling of 10515223123 in words is "ten billion, five hundred fifteen million, two hundred twenty-three thousand, one hundred twenty-three".