12151112423 has 4 divisors (see below), whose sum is σ = 12865883760. Its totient is φ = 11436341088.

The previous prime is 12151112399. The next prime is 12151112431. The reversal of 12151112423 is 32421115121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32421115121 = 23339 ⋅1389139.

It is a cyclic number.

It is not a de Polignac number, because 12151112423 - 2¹² = 12151108327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151112443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357385643 + ... + 357385676.

It is an arithmetic number, because the mean of its divisors is an integer number (3216470940).

Almost surely, 2^12151112423 is an apocalyptic number.

12151112423 is a deficient number, since it is larger than the sum of its proper divisors (714771337).

12151112423 is an equidigital number, since it uses as much as digits as its factorization.

12151112423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714771336.

The product of its digits is 480, while the sum is 23.

Adding to 12151112423 its reverse (32421115121), we get a palindrome (44572227544).

The spelling of 12151112423 in words is "twelve billion, one hundred fifty-one million, one hundred twelve thousand, four hundred twenty-three".