12123012113 has 8 divisors (see below), whose sum is σ = 12145679208. Its totient is φ = 12100368384.

The previous prime is 12123012101. The next prime is 12123012119. The reversal of 12123012113 is 31121032121.

It can be written as a sum of positive squares in 4 ways, for example, as 4241656384 + 7881355729 = 65128^2 + 88777^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12123012113 - 2⁶ = 12123012049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12123012091 and 12123012100.

It is not an unprimeable number, because it can be changed into a prime (12123012119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283195 + ... + 1292607.

It is an arithmetic number, because the mean of its divisors is an integer number (1518209901).

Almost surely, 2^12123012113 is an apocalyptic number.

It is an amenable number.

12123012113 is a deficient number, since it is larger than the sum of its proper divisors (22667095).

12123012113 is a wasteful number, since it uses less digits than its factorization.

12123012113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11683.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12123012113 its reverse (31121032121), we get a palindrome (43244044234).

The spelling of 12123012113 in words is "twelve billion, one hundred twenty-three million, twelve thousand, one hundred thirteen".