12123531051 has 8 divisors (see below), whose sum is σ = 16267668624. Its totient is φ = 8030873760.

The previous prime is 12123531031. The next prime is 12123531073. The reversal of 12123531051 is 15013532121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12123531051 - 2⁵ = 12123531019 is a prime.

It is a super-2 number, since 2×12123531051² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12123531031) 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 7 ways as a sum of consecutive naturals, for example, 12869520 + ... + 12870461.

It is an arithmetic number, because the mean of its divisors is an integer number (2033458578).

Almost surely, 2^12123531051 is an apocalyptic number.

12123531051 is a deficient number, since it is larger than the sum of its proper divisors (4144137573).

12123531051 is a wasteful number, since it uses less digits than its factorization.

12123531051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25740141.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 12123531051 in words is "twelve billion, one hundred twenty-three million, five hundred thirty-one thousand, fifty-one".