12100542012431 has 4 divisors (see below), whose sum is σ = 12112393670664. Its totient is φ = 12088690354200.

The previous prime is 12100542012401. The next prime is 12100542012437. The reversal of 12100542012431 is 13421024500121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12100542012431 is a prime.

It is a super-2 number, since 2×12100542012431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12100542012431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100542012437) 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, 5925827585 + ... + 5925829626.

It is an arithmetic number, because the mean of its divisors is an integer number (3028098417666).

Almost surely, 2^{12100542012431} is an apocalyptic number.

12100542012431 is a deficient number, since it is larger than the sum of its proper divisors (11851658233).

12100542012431 is a wasteful number, since it uses less digits than its factorization.

12100542012431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11851658232.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 12100542012431 its reverse (13421024500121), we get a palindrome (25521566512552).

The spelling of 12100542012431 in words is "twelve trillion, one hundred billion, five hundred forty-two million, twelve thousand, four hundred thirty-one".