10531212530 has 32 divisors (see below), whose sum is σ = 20102484096. Its totient is φ = 3958522624.

The previous prime is 10531212509. The next prime is 10531212533. The reversal of 10531212530 is 3521213501.

It is a happy number.

It is a super-2 number, since 2×10531212530² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10531212496 and 10531212505.

It is not an unprimeable number, because it can be changed into a prime (10531212533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62117 + ... + 157863.

It is an arithmetic number, because the mean of its divisors is an integer number (628202628).

Almost surely, 2^10531212530 is an apocalyptic number.

10531212530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10531212530 is a deficient number, since it is larger than the sum of its proper divisors (9571271566).

10531212530 is a wasteful number, since it uses less digits than its factorization.

10531212530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96418.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 10531212530 in words is "ten billion, five hundred thirty-one million, two hundred twelve thousand, five hundred thirty".